The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Parrot parents "name" their children with a signature call.
112
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
The colossal squid has the largest eyes in the world.
4
Squirrels forget where they hide about half of their nuts.
698
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16