Terrier mix dogs are not very choosy when it comes to food. You can give them any commercial well-balanced dog food. It is better to avoid foods with wheat and corn. You can give them bones or raw meat or any kind of poultry meal. But make sure not to overfeed these dogs and get them into the habit of eating at fixed times. Dry food is preferable for terrier mix dogs. But wet food can be given twice or thrice a week.
Alongside the Bloodhound and Basset Hound, the beagle has one of the best developed senses of smell of any dog. In the 1950s, John Paul Scott and John Fuller began a 13-year study of canine behavior. As part of this research, they tested the scenting abilities of various breeds by putting a mouse in a one-acre field and timing how long it took the dogs to find it. The beagles found it in less than a minute, while Fox Terriers took 15 minutes and Scottish Terriers failed to find it at all. Beagles are better at ground-scenting (following a trail on the ground) than they are at air-scenting, and for this reason they have been excluded from most mountain rescue teams in favor of collies, which use sight in addition to air-scenting and are more biddable. The long ears and large lips of the beagle probably assist in trapping the scents close to the nose.
The Chihuahua is a native of Mexico, and his ancestors were surrounded by many myths. They were believed to be spirit guides that protected souls as they traveled through the underworld. While the stories about the dog’s origins are interesting, there’s no real evidence about how long they’ve existed or that they were known to the Aztecs or other peoples who inhabited Mexico before the Spaniards came.
In a 2014 literature review of dog bite studies, the American Veterinary Medical Association (AVMA) states that breed is a poor sole predictor of dog bites. Controlled studies have not identified pit bulls as disproportionately dangerous. Pit bull-type dogs are more frequently identified with cases involving very severe injuries or fatalities than other breeds, but the review suggests this may relate to the popularity of the breed, noting that sled dogs, such as Siberian Huskies, were involved in a majority of fatal dog attacks in some areas of Canada. Bite statistics by breed are not tracked by the CDC, AVMA or the American Society for the Prevention of Cruelty to Animals (ASPCA). State Farm Insurance spokeswoman Heather Paul stated "Pit bulls in particular are often misidentified when a bite incident occurs, so reliable bite statistics related to the dogs’ breed are unreliable and serve no purpose." The White House stated that "the Centers for Disease Control and Prevention looked at twenty years of data about dog bites and human fatalities in the United States. They found that fatal attacks represent a very small proportion of dog bite injuries to people and that it’s virtually impossible to calculate bite rates for specific breeds". 
In addition to organized beagling, beagles have been used for hunting or flushing to guns (often in pairs) a wide range of game including snowshoe hare, cottontail rabbits, game birds, roe deer, red deer, bobcat, coyote, wild boar and foxes, and have even been recorded as being used to hunt stoat. In most of these cases, the beagle is employed as a gun dog, flushing game for hunter's guns.
The Pit Bull’s origins can be traced back to early 19th-century England, Ireland and Scotland. The canine’s ancestors were the result of experimentally crossbreeding different Bulldog and Terrier breeds for the purpose of bear- and bull-baiting, a blood sport in which the dog was trained to attack until the larger animal was defeated. When baiting was banned in the 1800s, the dogs were then bred for the sport of ratting and dog fighting. European immigrants introduced the Pit Bull breed to North America.
The Chihuahua, which has an average lifespan of 14 and 18 years, is known to suffer from some minor health ailments such as keratoconjunctivitis sicca (KCS), hypoglycemia, pulmonic stenosis, patellar luxation, and hydrocephalus. It is also susceptible to some severe health issues, including molera -- a hole in the Chihuahua's skull, occurring when bones in the fontanel are not firmly knit together.
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.
"Monkey is a 10-week-old Chihuahua. She got her name Monkey because she climbs on my shoulders all the time and adores bananas, so I thought 'Monkey' really fit her. She is very, very playful and is a joy to have. She is completely pad trained now and knows sit! She lives with 2 adults, 2 teenagers (15 and 16) and 2 little kids (7 and 11) and she loves everyone. But, is very attached to me (I'm 16). Monkey is estimated to weigh about 3 lbs. full grown. She is extremely smart and has great manners, surprisingly. Monkey is for sure a lapdog and follows me around everywhere!! Loves car rides and is very well socialized. I've watched Cesar Millan for about 3 years now and have read his book. He's amazing and has taught me so much about dog psychology, he is truly my idol. Monkey is a well-balanced dog and I taught her young not to have the mind set to walk all over me or try to control me in any way. Though she is spoiled rotten, she knows who is boss. I could not imagine my life without my little Monkey and have lots of years to look forward to. I will ONLY have Chihuahuas; they are an amazing breed and truly a joy to have!!"
Chihuahua puppies can be at risk for hypoglycemia (low blood sugar). Signs of hypoglycemia include lethargy, sleepiness, uncoordinated walking, unfocused eyes, spasms of the neck muscles or head pulling back or to the side, fainting, and seizures. Hypoglycemia can be avoided with adequate nutrition and frequent feedings, especially for Chihuahuas that are younger, smaller, or leaner. Chihuahua owners should have a simple-sugar supplement on hand to use in emergencies, such as Nutri-Cal or corn syrup. These supplements can be rubbed on the gums and roof of the mouth to rapidly raise the blood sugar level.
But the hardy little dogs lived on in remote villages and, in the mid-1800s, when Americans began to take an interest in the breed, they found many specimens in the State of Chihuahua. So it was that this survivor of two lost civilizations gained worldwide fame as the Chihuahua. The first AKC-registered Chihuahua, a little guy named Beppie, was recorded in 1908.
Leaping from your arms. Some Chihuahuas melt into your arms and stay there, but many are wriggly. They can be deceptive about it, too, apparently settling into your arms with contentment, then suddenly launching themselves through the air if you relax your grip. A fall from a few feet up, especially over a hard surface, can result in a broken leg or concussion. Hold on tight if you pick up a Chihuahua over concrete.
Generally there is a wide interpretation of what is called “breed”. Breeds are actually categorized by a functional type from which a breed has developed. The most of the breeds are traditional breeds with a very long history, who are registered. There are some rare breeds, who have also their own registries, but some new breeds are still under development. There are even a lot of dog breeds, who are in danger to extinct. There are a few cases, where the origin of breed overlaps the frontier of two, three or more countries. As the general rule the dog is listed in the country in that he is most commonly associated, according to the FCI (Fédération Cynologique Internationale), by the designated country of the dog. There are some dogs, who have an uncertain origin, therefore they are getting classified under several countries.