Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
Two dogs were among the Titanic survivors.
262
One in three dog owners say they have talked to their pets on the phone.
427