The elephant brain weighs about 6,000g.
274
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Dogs have been man's pet for over 14,000 years.
224