Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Cats and dogs can hear ultrasound.
350
Alligators can live up to 100 years.
337
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Dogs sometimes fake being sick to get attention.
26
Penguins have a gland above their eye that turns saltwater into freshwater.
12
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Gorillas can catch human colds and other illnesses.
205