If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
The largest breed of rabbit is the Flemish Giant.
65
Female kangaroos have three vaginas.
2
A puppy is born blind, deaf, and toothless.
16
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Rattlesnake mating sessions have been known to last more than 22 hours.
232