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
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
The katydid bug hears through holes in its hind legs!
110
Cattle are the only mammals that pee backwards.
33
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Elephants are the only animals that can't jump.
1