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
When cats are happy, they may squeeze their eyes shut.
10
The colossal squid has the largest eyes in the world.
4
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Rattlesnake mating sessions have been known to last more than 22 hours.
232