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The Chihuahua breed is a popular choice if you're looking for a toy-size breed. While they might be small in size, they are big in personality and aren't afraid to let you know just how they feel.
Pregnancy is possible as soon as the first estrus cycle, but breeding is not recommended prior to the second cycle. [3] As with other domesticated species, domestication has selectively bred for higher libido , and earlier and more frequent breeding cycles in dogs than in their ancestors.
The Chihuahua [a] (or Spanish: Chihuahueño) is a Mexican breed of toy dog. It is named for the Mexican state of Chihuahua and is the smallest dog breed in the world. [ 5 ] It is usually kept as a companion animal .
A molera (also known as a fontanel) is a "soft spot" on the top of a Chihuahua's skull; it is the equivalent to the bregmatic or anterior fontanelle in human babies, but unlike most mammals Chihuahua's fontanelle persist into maturity. Historically it has been very common amongst Chihuahuas and was regarded as a mark of purity for this ...
The Chihuahua is officially the world’s smallest breed. The American Kennel Club breed standard states that they should not exceed 6lb. The Guinness World Record holder of the title of the world ...
The Chihuahua breed is a popular choice if you're looking for a toy-size breed. While they might be small in size, they are big in personality and aren't afraid to let you know just how they feel.
Pyometra or pyometritis is a uterine infection. Though it is most commonly known as a disease of the unaltered female dog, it is also a notable human disease. It is also seen in female cattle, horses, goats, sheep, swine, cats, rabbits, hamsters, ferrets, rats and guinea pigs.
These gentle giants have the longest pregnancy of any mammal because their babies require more time to develop since they are large. In fact, they are usually pregnant for 22 months at a time. 24.