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 difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
There are approximately three chickens for every human on Earth.
13
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
The reindeer is the only mammal that can see UV light.
17
Dogs sometimes fake being sick to get attention.
26
Parrot parents "name" their children with a signature call.
112