A fun quickie on how wolves evolved into Chihuahuas (and other doggos)

How did humans' 'oldest rivals,' the grey wolves (canis lupus), become our slobbering, shoe-chewing, bone-fetching, protective best friends? TED-Ed brings us this brief history that shows how wolves evolved into French Bulldogs, German Shepherds, Shiba Inus, Toy Poodles, and the rest of the canine lot.