It's not rocket science why breeders created teacup dogs: We're kind of wired ... up and snuggling their chunkiness. The standard French bulldog is already on the smaller side, as height goes.

The smallest dog alive today is a teacup-sized Chihuahua named Pearl. Second on the list is the French bulldog. Specifically bred to be companion animals, the dogs are as good-natured as they are ...