Bats sleep 18-20 hours per day.
5
Sloths take two weeks to digest their food.
243
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The colossal squid has the largest eyes in the world.
4
A cow produces around 200,000 glasses of milk in her lifetime.
373
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