Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
The head of a jellyfish is called the "Bell."
6
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Dogs have been man's pet for over 14,000 years.
224
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
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