The cat brain weighs about 30g.
167
Parrot parents "name" their children with a signature call.
112
A puppy is born blind, deaf, and toothless.
16
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
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
A lion in the wild usually makes no more than twenty kills a year.
186
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6