Tigers can see 6 times better at night than humans.
305
Sharks have been on the planet longer than trees.
14
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Two dogs were among the Titanic survivors.
262
Dogs sometimes fake being sick to get attention.
26
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2