There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
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
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Alligators can live up to 100 years.
337
Whales and dolphins can't taste anything other than salt.
11