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
A dairy cow can produce more milk when listening to music.
446
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10