Because Chihuahuas get cold easily they tend to love their dens and will often burrow themselves in pillows, clothes hampers, and blankets. They are often found under the covers or at the bottom of the bed, deep in the dark and safety of what they perceive as their den. Chihuahuas also enjoy time in sunlight. Chihuahuas sometimes act like cats and climb up to the highest point on a couch, usually on top of the pillows, and curl up into a ball. Chihuahuas have their own type of personality. They tend to be alert. Chihuahuas typically do not show fear; even though they are a smaller breed, they do not view their size as a disadvantage. 
Known to be among the most friendly of the hound breeds, the Beagle was developed to be a pack hunter. The best qualities in the Beagle are its fondness for exploring the outdoors and its enthusiasm for trailing. This independent breed barks, howls, and sometimes runs off on a trail on its own. Because it is also an incredibly tolerant, calm and adventurously playful dog, the Beagle also makes a perfect pet for families with children.
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.
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.
Reverend Phillip Honeywood established a beagle pack in Essex in the 1830s and it is believed that this pack formed the basis for the modern breed. Although details of the pack's lineage are not recorded it is thought that North Country Beagles and Southern Hounds were strongly represented; William Youatt suspected that Harriers formed a good majority of the beagle's bloodline, but the origin of the Harrier is itself obscure. Honeywood's Beagles were small, standing at about 10 inches (25 cm) at the shoulder, and pure white according to John Mills (writing in The Sportsman's Library in 1845). Prince Albert and Lord Winterton also had Beagle packs around this time, and royal favour no doubt led to some revival of interest in the breed, but Honeywood's pack was regarded as the finest of the three.
In general, pit bulls aren’t aggressive with people but are “less tolerant” of other dogs than many other breeds, says Pamela Reid, PhD, vice president of the ASPCA’s Animal Behavior Center in New York. They also have “great tenacity. They put their mind to something, and they do it. That’s what makes them great dogs for sports like weight pulling. They are very strong, athletic animals," Reid says.
I have a, what i am discovering a Ratcha…she is intelligent, housebroke at 3 months, and at first frightened by children. But my job and life evolve around children. Now she loves them. Some people she does not like, no matter how hard they try to warm up to her. But once she likes you, she really likes you. She has anxieties over several things. Before a long car ride I have to give her melatonin. Loud noise petrifies her. She loves to cuddle up in the warm blankets as soon as they come out of the dryer. She burrows underneath her blankets…the warmer the better. She chases the cats, but doesnt hurt them. She barks alot, but a bark collar helps. She chokes easy, so you have to put on a vest type collar when going for walks. She follows me to every room…no matter. If I put on a space heater, shes the first one there. The cats are no match with her in catching mice. She has it within seconds of its being in the open. Shes fast! She loves squeaky toys, but wants you to throw it, and fight her for it. Then she shakes it to death! Shes extremely loyal to me. Her name is Gidget, and I love this little dog with all my heart.
Not every Beagle visit to the vet is for a genetic problem. The Beagle’s long, floppy ears are prone to chronic ear infections. Left untreated, such infections can cause permanent damage to the ear canal and even destroy your dog's hearing. Checking ears often and seeing the veterinarian at the first whiff of a problem combined with good follow-through will keep a Beagle’s ears from being an expensive and painful problem.