Barkfest

From a dancing pup to a yoga-loving pooch that does more than just downward dog, this one-hour special features some of the funniest canine videos to craze the Internet.

Ever meet a dog and wonder what breed it is? We did, and now we've got the answer.

Small towns are under attack. A terrible menace is stalking the streets. Believe it or not, packs of chihuahuas, are wreaking havoc in cities including Phoenix and Los Angeles. But one couple is committed to giving these tiny terrors a second chance.

With over 400 breeds and countless variations, canines have become the most diverse mammal on land. From ears to tails, coats to paws, every part of their bodies is uniquely structured to serve an important purpose.