Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
A puppy is born blind, deaf, and toothless.
16
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
The octopus does not have a blind spot.
273
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Alligators can live up to 100 years.
337
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17