Chihuahuas have been popular companion dogs for millennia. The tiny teacup Chihuahua is a much more recent arrival on the pet scene, but the teacup Chihuahua is not a new breed of dog. In fact, teacup is just a cute and catchy word that breeders and owners have coined to describe a Chi...
The smallest reptile in the world is a chameleon subspecies calledBrookesia nana, or nano-chameleon. They’re so tiny that they’re around the size of a pill and can fit on a human fingertip! Smallest fish:Photocorynus spiniceps model of a female Photocorynus spiniceps at the Natural Hi...