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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Cats sleep for 70% of their lives.
8
Moths are unable to fly during an earthquake.
328
Denmark has twice as many pigs as there are people.
66
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25