A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Lobsters have blue blood.
476
Sharks, like other fish, have their reproductive organs in their chests.
248
A puppy is born blind, deaf, and toothless.
16
Parrot parents "name" their children with a signature call.
112
Cats and dogs can hear ultrasound.
350