Due to their athleticism and diverse breeding background, the Pit Bull breed tends to be hardy, with an average lifespan of 12 to 14 years, longer than many breeds of a similar size. There are some genetic conditions to be watchful for. The Pit Bull tends to suffer from bone diseases such as hip dysplasia, degenerative myelopathy and kneecap dislocation. The Pit Bull can also suffer from skin problems, such as mange and skin allergies, because of its short coat. Other health ailments seen in Pit Bulls include thyroid and congenital heart defects.
The Chihuahua burst onto the national stage as a “must have” dog for two reasons: The “Yo Quiero Taco Bell?” ad campaign and, more recently, the tendency of rich, attractive and famous young women to haul these small dogs with big attitudes around in stylish and expensive oversized purses. The appeal? The tiny (as small as two pounds) Chihuahua offers feistiness coupled with enduring loyalty to the person he chooses as his own, along with an expressive face, including large, round eyes that show everything the dog is thinking.
Alaska Airlines Health Dog breeds, including Staffordshire Bull Terriers, American Staffordshire Terriers and American Pit Bull Terriers, fly at their owner's risk, with no additional compensation if the dog suffers injury or dies during transit. The airline may refuse to accept the dog if it feels that outside temperatures are too extreme for the animal's safety.[71]
The bull breeds are often grossly misunderstood. The qualities that make these dogs tenacious players in obedience and agility games also attract highly unscrupulous people looking for strong competitors for their dog fighting rings. The sorry result is that bull breeds, in particular the APBT, have gained a reputation over recent years for being dangerous.
The Chihuahua is a good companion dog. Courageous, extremely lively, proud and adventurous, they enjoy affection. Brave, cheerful and agile, Chihuahuas can be strong-willed without proper human leadership. They are loyal and become attached to their owners. Some like to lick their owner's faces. Socialize them well. For some, they may be slightly difficult to train, but they are intelligent, learn quickly, and respond well to proper, firm but gentle (positive reinforcement) training. May be difficult to housebreak. Do not let the Chihuahua get away with things you would not allow a large dog to do (Small Dog Syndrome), such as jumping up on humans. While it may be cute for a 5-pound tiny dog to put his paws on your leg when you come home from work, it is allowing a dominant behavior. If you allow this little dog to be your pack leader it will develop many behavior issues such as jealousy, aggression with other dogs and sometimes with humans, and will become undeniably suspicious of people except for its owner. When strangers are present, it will begin to follow its owner's every move, keeping as close as possible. A Chihuahua that is pack leader of its humans may snap at children. This breed is generally not recommended for children, not because it is not good with them, but because most people treat the Chihuahua differently than they would a large dog, causing it to become untrustworthy. Because of its size, this breed tends to be babied and things we humans clearly see as bad behavior for a large dog are looked over as cute with a small dog. Small dogs also tend to be walked less, as humans assume they get enough exercise just running around during the day. However, a walk provides more than just exercise. It provides mental stimulation and satisfies the migration instinct all dogs have. Because of this, small breeds such as the Chihuahua tend to become snappish, yappy, protective and untrustworthy with kids and humans they do not know. Chihuahuas that are their human's pack leader tend to be fairly dog-aggressive. An owner who realizes this and treats the Chihuahua no differently than they would a large breed, becoming a clear pack leader, will get a different, more appealing temperament out of this wonderful little dog, finding it to be a good little child companion.

Everything a Beagle does somehow leads back to his nose. His powerful sense of smell overcomes any good sense you might have tried to instill and tells the Beagle to escape from the yard or break into the dog food bag in the pantry or see what’s in the trash. When channeled properly, it’s also what makes him a great arson dog or termite detector, so it all evens out in the end. Just remember that when your Beagle’s nose is down, his “other brain” is turned off.
The Chihuahua loves to run and play and can usually get enough exercise in a very small space. Simply trotting around following their people is usually enough exercise for this happy breed. Short, slow walks will keep your dog in good weight and condition. Avoid overexerting the Chihuahua. If your dog is panting and working hard to keep up, it’s time to pick him up and carry him home.

My rescue is Iggyboo, a cairn terrier/Chihuahua mix, weighing in at 10 lbs and only 8 inches tall, now at almost 3 yrs. He is very protective and loyal, and pretty much a lap dog. He loves to play with his toys, and is highly intelligent, often preferring his interactive toys over stuffed ones. I find myself constantly teaching him new words or playing new games. He hates children and often adults, but can warm up to people given a few minutes and a few kind words (treats help this process). He also can be a challenge to walk, being aggressive to other dogs, but responds very well to a clicker and a treat for distraction. So, generally I have had no issues with him on walks, but am always careful. He loves bedtime, and burrows under the covers, sleeping a full 8 hours straight, he gets upset if I roll over and wake him up and will growl at me, lol.


If you live in a cold or rainy climate, housebreaking will be especially difficult, because Chihuahuas hate both the cold and the rain. In these climates, a COVERED potty area is strongly recommended. Sometimes a doggy door is necessary so your Chihuahua can run outside the moment he feels the urge in his tiny bladder. An indoor litterbox is another option.

Progressive Retinal Atrophy (PRA): This is a degenerative eye disorder that eventually causes blindness from the loss of photoreceptors at the back of the eye. PRA is detectable years before the dog shows any signs of blindness. Fortunately, dogs can use their other senses to compensate for blindness, and a blind dog can live a full and happy life. Just don't make it a habit to move the furniture around. Reputable breeders have their dogs' eyes certified annually by a veterinary ophthalmologist and do not breed dogs with this disease.
Intervertebral Disk Disease: The spinal cord is surrounded by the vertebral column, and between the bones of the vertebral column are intervertebral discs that work as shock absorbers and allow normal movement of the vertebrae. The discs are made of two layers, an outer fibrous layer and an inner jelly-like layer. Intervertebral disc disease occurs when the jelly like inner layer protrudes into the spinal canal and pushes against the spinal cord. Compression of the spinal cord may be minimal, causing neck or back pain, or it can be severe, causing loss of sensation, paralysis, and lack of bowel or bladder control. The damage done by the spinal compression may be irreversible. Treatment is based on several factors, including location, severity, and length of time between injury and treatment. Confining the dog may be of some use, but surgery is often needed to relieve pressure on the spinal cord. Surgery is not always successful.
Beagles are used in a range of research procedures: fundamental biological research, applied human medicine, applied veterinary medicine, and protection of man, animals or the environment.[70][71] Of the 8,018 dogs used in testing in the UK in 2004, 7,799 were beagles (97.3%).[72] In the UK, the Animals (Scientific Procedures) Act 1986 gave special status to primates, equids, cats and dogs and in 2005 the Animal Procedures Committee (set up by the act) ruled that testing on mice was preferable, even though a greater number of individual animals were involved.[73] In 2005 beagles were involved in less than 0.3% of the total experiments on animals in the UK, but of the 7670 experiments performed on dogs 7406 involved beagles (96.6%).[70] Most dogs are bred specifically for this purpose, by companies such as Harlan. In the UK companies breeding animals for research must be licensed under the Animals (Scientific Procedures) Act.[73]
Adolescent Beagles are full of energy and need a lot of opportunities to work it all off. They love to go for walks with their family, or, even better, a good run across a field to hunt down rabbits (not recommended unless you have trained your dog to come back to you). They'll enjoy jogging with you, but wait until they're 18 months or older before starting them on a repetitive exercise like this.
Great article! I hate the stigma associated with this loving, loyal, clownish breed. We adopted Kane (pictured) in December. Now, I will be honest, it's been sort of a rocky relationship between Kane and the resident cats, but that's because Kane was one-and-a-half years old when he became a part of our family. But he's learning that cats are his friend. It's a slow process but I knew that already and was prepared. Pits are just like kids - they learn from their environment. Now Kane has a loving, fun, and safe environment he can learn and grow from. I've owned many different dog breeds and by far, even with his "shady" past, Kane has showed us more love and affection than any other.
By the fourteenth century, hare-hunting had become a popular sport in England, and the dogs used were probably of Beagle type. The origin of the name Beagle may be from old French words meaning open throat in reference to the breed’s melodious bay, or from the Celtic, old English, or old French words for small. The word Beagle was not used until 1475, however, but can then be found frequently in writings from the sixteenth century on.
The experiment was a huge success. Because they are small, friendly, and cute, the Beagles didn't intimidate people who are afraid of dogs, and with their super nose power, they could be trained to identify specific food articles while bypassing those that weren't contraband. Today, members of the "Beagle Brigade" patrol the baggage-claim areas at more than 20 international airports and other points of entry into the United States.
They aren't yappy dogs, but they do have three distinct vocalizations — a bark/growl, a baying howl, and a half-baying howl (a cross between a frantic bark and a bay). The half-howl vocalization usually is reserved for when they catch sight of quarry — or think it's time to wake the neighbors at 6 a.m.! Being pack dogs, they generally get along well with other animals and their human friends — and they think everyone is their new best friend.
Reality: It’s a fact that puppies are adorable! But the thing about puppies is, well, they grow up. And as they mature, their personality develops and that’s when you really find out whether your Pit Bull is dominant or submissive with people, or whether she is aggressive toward some, none or all dogs. Dog-intolerance and dog-aggression are traits that do not develop in some dogs until they are fully mature. It is possible that the cute little puppy you adopt who is friendly with all other dogs may not like other dogs at all later in life, even dogs she has grown up with and lived with for her entire life. Both nurture (environment) and nature (genetics) play a role in determining a dog’s mature personality. This doesn’t mean that Pit Bull puppies should not be adopted, but if you want to know how big your dog will ultimately be and how she will act around humans and other animals, you may want to consider adopting an adult.
The terrier mix dogs that we see and know today have a long breeding history. During the early 18th century, the terriers were crossed with hunting (explains their great sense of smell) or fighting (explains their guarding nature) dogs. This was done to improve their ability to hunt (either on land or in waters) or fight. By the 19th century, dog shows began to be organized, which resulted in careful and purposeful breeding. Since then, breeders started to breed dogs mainly as pets.
Apple Head and Deer Head comes from the same breed of Chihuahuas but they are different due to their physical appearance. The Apple Head Chihuahua is known for having a round/ apple shaped head and “buggy eyes” whereas a Deer Head Chihuahua has a flatter head, thinner skull, wider eyes, and longer nose. Their physical body shape is mostly the same, except the Deer Head Chihuahua is known to have longer legs than other Chihuahuas.[29] The Deer Head Chihuahua tends to be larger in weight, where an Apple Head is more likely to keep their weight under ten pounds. Apple Head Chihuahuas are bigger in length than they are tall and have shorter necks.[30] Deer Head Chihuahuas have longer ears than Apple Heads and their head also has a slope like form. Both Apple Head and Deer Head can be a short hair or long hair. They also both come in various different colors such as brown, black, tan, or white. Chihuahuas can show traits from both Apple Head and Deer Head.[31] Deer Head Chihuahuas tend to have better health than Apple Heads, due to their longer noses. Apple Heads have a higher risk of getting respiratory issues, due to having a smaller airway. Deer Headed Chihuahuas are not allowed in The American Kennel Club (a club of purebred dogs registered in the United States) due to not meeting the standards that Apple Heads do. Deer Head Chihuahuas are not allowed because they have a longer jaw line and a slope that connects their muzzle and head, creating a 45 degree angle instead of a 90 degree angle like the Apple Head.[32] Apple Heads are allowed in AKC and meet the requirements due to having a smaller weight, having a rounder head, and also having a 90 degree angle formed by the muzzle to the forehead.[33]

Before individual Beagles can be included in the Canine Health Information Center (CHIC) database, the National Beagle Club requires them to have a hip certification from the Orthopedic Foundation for Animals (OFA) or the University of Pennsylvania (PennHIP) and certification from the Canine Eye Registry Foundation (CERF), and test results from the University of California at Davis Veterinary Genetics Lab must be registered with the OFA.


The Chihuahua dog breed is known for its varied temperament. For example, while the Chihuahua is reserved towards strangers, it is friendly with pets and other household dogs. The dog may also try to act protective, but this boldness is generally displayed as barking and is, therefore, not very effective as a guard dog. However, this sassy dog has become a favorite among toy dog lovers, especially for its extreme devotion to its master.

"This here is my baby girl Roxy at 2 and a half months old. She is the first Pit I've owned and I must say...I'll never own another breed of dog BUT Pitbulls! I fell in love with the breed 3 years ago when I went on vacation to California (I live in Washington) and I went to a Pitbull rescue... immediately I was surrounded by 15-20 Pitbulls. I've never had so many dogs at once DYING for my attention!!! I knew from that day on there was no other dog I wanted BUT a Pitbull. No one will ever understand a Pitbull unless they own one. The only thing they want in this world, what they live for, is to please you. Make you laugh and just be your companion. There's no such thing as a bad dog... just a bad owner. It frustrates me to hear all these stories about Pitbulls attacking little kids or biting their owners; most of those dogs that you see on the news AREN'T EVEN PITBULLS!!! They are all mostly mutts. How dare someone claim what a Pitbull is when most of those people have never even seen a Pitbull in person. No one believes me when I say Roxy is a purebred because "she's too small to be a purebred Pitbull" when in reality, purebred Pitbull Terriers ARE medium sized dogs—Roxy is 47 pounds now and pure muscle! She's got what I like to call "the Pitbull wiggle" when she gets so excited her whole body wiggles and she "smiles" at me. (I could really go on forever about Roxy!) She warms my heart and I want to cry sometimes just looking at her, and how happy she makes me. They are determined dogs, and have so much passion and fire in their eyes (just like her mamma!). I don't know what I would do without my baby girl!!!"
Two-color varieties always have a white base color with areas of the second color. Tan and white is the most common two-color variety, but there is a wide range of other colors including lemon, a very light tan; red, a reddish, almost orange, brown; and liver, a darker brown, and black. Liver is not common and is not permitted in some standards; it tends to occur with yellow eyes. Ticked or mottled varieties may be either white or black with different colored flecks (ticking), such as the blue-mottled or bluetick beagle, which has spots that appear to be a midnight-blue color, similar to the coloring of the Bluetick Coonhound. Some tricolor beagles also have ticking of various colors in their white areas.[33][34]

Having a solid structure, the Beagle resembles a Foxhound. Hunters can follow the dog on foot, and the tuneful bay of the Beagle aids hunters in locating the dog from a distance. Because of its moderate size, the Beagle can even be carried to the hunting site, where it can then scurry into the dense undergrowth to look for the target. The dog receives protection against the thick underbrush from its coarse and close coat. And being an amicable dog makes it a great pack hunter, mixing well with other dogs.

"This here is my baby girl Roxy at 2 and a half months old. She is the first Pit I've owned and I must say...I'll never own another breed of dog BUT Pitbulls! I fell in love with the breed 3 years ago when I went on vacation to California (I live in Washington) and I went to a Pitbull rescue... immediately I was surrounded by 15-20 Pitbulls. I've never had so many dogs at once DYING for my attention!!! I knew from that day on there was no other dog I wanted BUT a Pitbull. No one will ever understand a Pitbull unless they own one. The only thing they want in this world, what they live for, is to please you. Make you laugh and just be your companion. There's no such thing as a bad dog... just a bad owner. It frustrates me to hear all these stories about Pitbulls attacking little kids or biting their owners; most of those dogs that you see on the news AREN'T EVEN PITBULLS!!! They are all mostly mutts. How dare someone claim what a Pitbull is when most of those people have never even seen a Pitbull in person. No one believes me when I say Roxy is a purebred because "she's too small to be a purebred Pitbull" when in reality, purebred Pitbull Terriers ARE medium sized dogs—Roxy is 47 pounds now and pure muscle! She's got what I like to call "the Pitbull wiggle" when she gets so excited her whole body wiggles and she "smiles" at me. (I could really go on forever about Roxy!) She warms my heart and I want to cry sometimes just looking at her, and how happy she makes me. They are determined dogs, and have so much passion and fire in their eyes (just like her mamma!). I don't know what I would do without my baby girl!!!"
Small, compact, and hardy, Beagles are active companions for kids and adults alike. Canines in this dog breed are merry and fun loving, but being hounds, they can also be stubborn and require patient, creative training techniques. Their noses guide them through life, and they’re never happier than when following an interesting scent. The Beagle originally was bred as a scenthound to track small game, mostly rabbits and hare. He is still used for this purpose in many countries, including the United States.
In several entries you will see that the dog was originally bred for fighting. In noting this, we are simply highlighting the motive for its creation. In no case does this determine the behavior of an individual Pit Bull and under no circumstances does it mean every dog is intended solely for this purpose. All dogs deserve a home with caring and responsible owners willing to meet all their needs. Obviously, clandestine dog fighting is an intolerable practice.

Owners of a Maltese Terrier mix should also make a concerted effort to socialize their pet, especially within its first 14 weeks of life. This will help your Morkie learn to interact with other dogs and people and ensure that it doesn’t become too attached to you. Socialization will also help curb your dog’s separation anxiety and control their excessive barking.

Beagles bond with everyone in the family, especially children. They can be rambunctious when playing, however, so they need to be properly socialized and supervised with very young children. In addition, Beagles tend to be "mouthy," grabbing things, including your or your child's hand, with their mouths to play. They do this in fun and can be trained not to do this.
Pit bull breeds have become famous for their roles as soldiers, police dogs, search and rescue dogs, actors, television personalities, seeing eye dogs, and celebrity pets. Pete the Pup from the movie series The Little Rascals, an American Staffordshire Terrier, is a historically well-known pit bull. Lesser known, but still historically notable pit bulls include Billie Holiday's companion "Mister",[75] Helen Keller's dog "Sir Thomas",[76] Buster Brown's dog "Tige",[77] Horatio Jackson's dog "Bud",[78][79] President Theodore Roosevelt's pit bull terrier "Pete", "Jack Brutus", who served for Company K, the First Connecticut Volunteer Infantry during the Civil War,[80] Sergeant Stubby, who served for the 102nd Infantry, 26th (Yankee) Division during World War I, and Sir Walter Scott's "Wasp".[81]
"This here is my baby girl Roxy at 2 and a half months old. She is the first Pit I've owned and I must say...I'll never own another breed of dog BUT Pitbulls! I fell in love with the breed 3 years ago when I went on vacation to California (I live in Washington) and I went to a Pitbull rescue... immediately I was surrounded by 15-20 Pitbulls. I've never had so many dogs at once DYING for my attention!!! I knew from that day on there was no other dog I wanted BUT a Pitbull. No one will ever understand a Pitbull unless they own one. The only thing they want in this world, what they live for, is to please you. Make you laugh and just be your companion. There's no such thing as a bad dog... just a bad owner. It frustrates me to hear all these stories about Pitbulls attacking little kids or biting their owners; most of those dogs that you see on the news AREN'T EVEN PITBULLS!!! They are all mostly mutts. How dare someone claim what a Pitbull is when most of those people have never even seen a Pitbull in person. No one believes me when I say Roxy is a purebred because "she's too small to be a purebred Pitbull" when in reality, purebred Pitbull Terriers ARE medium sized dogs—Roxy is 47 pounds now and pure muscle! She's got what I like to call "the Pitbull wiggle" when she gets so excited her whole body wiggles and she "smiles" at me. (I could really go on forever about Roxy!) She warms my heart and I want to cry sometimes just looking at her, and how happy she makes me. They are determined dogs, and have so much passion and fire in their eyes (just like her mamma!). I don't know what I would do without my baby girl!!!"
The merle coat pattern, which appears mottled, is not traditionally considered part of the breed standard. In May 2007, The Kennel Club decided not to register puppies with this coloration due to the health risks associated with the responsible gene, and in December of that year, formally amended its breed standard to disqualify merle dogs.[20] The Fédération Cynologique Internationale, which represents the major kennel clubs of 84 countries, also disqualified merle.[16] Other countries' kennel clubs, including Canada, Australia, New Zealand, and Germany, have also disqualified merle. However, in May 2008, the Chihuahua Club of America voted that merles would not be disqualified in the United States, and would be fully registrable and able to compete in AKC events. Opponents of merle recognition suspect the coloration came about by modern crossbreeding with other dogs and not by natural genetic drift.[21][citation needed]

Tiny dogs often come with big health problems, and the Chihuahua is no exception. Many Chihuahuas live long, healthy lives, but conditions seen in the breed include breathing difficulties caused by a windpipe that collapses in on itself; luxating patellas; eye disorders; congestive heart disease; certain neurological conditions including hydrocephalus (fluid buildup in and around the brain), neuronal ceroid lipofuscinosis, a condition in which fatty pigments in the brain cause the progressive loss of brain function, and atlantoaxial subluxation, a neck deformity that may require surgical correction; obesity; and dental problems caused by the small size of their mouths. 
Reality: Remember: each dog is an individual and should be judged by his current personality and behavior. Certainly he may be influenced by his genetics and history, but after working with thousands of Pit Bulls, I can assert unequivocally that many (if not most) Pit Bulls of unknown parentage that have been horribly abused, neglected, and/or forced to fight still love people more than anything, and still will be loving family pets. Responsible rescues and shelters evaluate dog behavior prior to adoption, and then adopt out only those Pit Bulls that display the proper temperament toward humans.
Epilepsy: This is a neurological condition that's often, but not always, inherited. Epilepsy can cause mild or severe seizures that may show themselves as unusual behavior (such as running frantically as if being chased, staggering, or hiding) or even by falling down, limbs rigid, and losing consciousness. Seizures are frightening to watch, but the long-term prognosis for dogs with idiopathic epilepsy is generally very good. It's important to take your dog to the vet for proper diagnosis (especially since seizures can have other causes) and treatment.
Chihuahuas are also known for luxating patella, a genetic condition that can occur in all dogs. In some dogs, the ridges forming the patellar groove are not shaped correctly and a shallow groove is created, causing the patella to luxate or slip out of place, sideways. The knee cap sliding across the bony ridges of the femur can cause some pain. The affected chihuahua will hold its leg flexed, and foot off the ground until the quadriceps muscle relaxes and lengthens, after which the animal feels no discomfort and continues with activity.
Whether you’re planning to get your new best friend from a breeder, a pet store, or another source, don’t forget that old adage “let the buyer beware”. Disreputable breeders and facilities that deal with puppy mills can be hard to distinguish from reliable operations. There’s no 100% guaranteed way to make sure you’ll never purchase a sick puppy, but researching the breed (so you know what to expect), checking out the facility (to identify unhealthy conditions or sick animals), and asking the right questions can reduce the chances of heading into a disastrous situation. And don’t forget to ask your veterinarian, who can often refer you to a reputable breeder, breed rescue organization, or other reliable source for healthy puppies.  
I have a chiuhuahua border terrier cross. He’s just about 16 months old. It’s just me and my husband and he loves us equally. He hates kids, always barks and growls at them. He surprisingly likes most other people, unless my husband isn’t around, he gets protective over me if men come around me. He likes all dogs, big and small. He jumps at them and is very playful. He’s also very snugly and sweet. I have noticed the tranchea problem with him though and also his eyes water all the time. He’s fixed and still only weighs about 5 lbs. he’s been hard to potty train- he wouldn’t go out into the snow until this year. I usually have to carry him on walks in cold and wet weather because he’s always shivering. he’s inquisitive, likes to wander.. we have to keep a close eye on him at the dog parks because he can wiggle his way under the fence to run after the dogs! Definitely the best dog I ever had, he’s got the most unique personality, he’s not ‘yappy’ for the most part.. just at night when I’m trying to sleep lol.
It is not known why the black and tan Kerry Beagle, present in Ireland since Celtic times, has the beagle description, since at 22 to 24 inches (56 to 61 cm) it is significantly taller than the modern day beagle, and in earlier times was even larger. Some writers suggest that the beagle's scenting ability may have come from cross-breeding earlier strains with the Kerry Beagle. Originally used for hunting stags, it is today used for hare and drag hunting.[28]
The skull should be fairly long, slightly domed at occiput, with cranium broad and full. Ears-Ears set on moderately low, long, reaching when drawn out nearly, if not quite, to the end of the nose; fine in texture, fairly broad-with almost entire absence of erectile power-setting close to the head, with the forward edge slightly inturning to the cheek-rounded at tip. Eyes-Eyes large, set well apart-soft and houndlike-expression gentle and pleading; of a brown or hazel color. Muzzle-Muzzle of medium length-straight and square-cut-the stop moderately defined. Jaws-Level. Lips free from flews; nostrils large and open. Defects-A very flat skull, narrow across the top; excess of dome, eyes small, sharp and terrierlike, or prominent and protruding; muzzle long, snipy or cut away decidedly below the eyes, or very short. Roman-nosed, or upturned, giving a dish-face expression. Ears short, set on high or with a tendency to rise above the point of origin.
Due to their athleticism and diverse breeding background, the Pit Bull breed tends to be hardy, with an average lifespan of 12 to 14 years, longer than many breeds of a similar size. There are some genetic conditions to be watchful for. The Pit Bull tends to suffer from bone diseases such as hip dysplasia, degenerative myelopathy and kneecap dislocation. The Pit Bull can also suffer from skin problems, such as mange and skin allergies, because of its short coat. Other health ailments seen in Pit Bulls include thyroid and congenital heart defects.
Reality: Pit Bulls do not have any special physical mechanism or enzyme that allows them to “lock” their jaws. If you compare a Pit Bull skull to a skull of any other dog breed, you can see with the naked eye that both skulls share the same characteristics and general bone structure. However, one personality trait of the Pit Bull breed is determination. Whatever Pit Bulls do, they do it with a great deal of enthusiasm, and it is this trait that can make it seem like they have a locking jaw when they bite down on something and are determined not to release it.
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