Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
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 dork is a whale's penis.
327
The octopus does not have a blind spot.
273
The elephant brain weighs about 6,000g.
274
When cats are happy, they may squeeze their eyes shut.
10
The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8