Rattlesnake mating sessions have been known to last more than 22 hours.
232
When cats are happy, they may squeeze their eyes shut.
10
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Lurch, a Watusi bull, had the largest horns in the world.
32
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6