A female ferret will die if it goes into heat and cannot find a mate.
143
The male platypus has poisonous spurs on its legs.
58
When it comes time to give birth, the female shark loses her appetite so she won't be tempted to eat her own pups.
280
The heart of a mouse beats 650 times per minute!
53
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
Alligators can live up to 100 years.
337
The octopus' testicles are located in its head.
82
A chicken will lay bigger and stronger eggs if you change the lighting in such a way as to make them think a day is 28 hours long!
37