The cat brain weighs about 30g.
167
Female kangaroos have three vaginas.
2
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Dogs sometimes fake being sick to get attention.
26
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Alligators can live up to 100 years.
337