Dolphins have names for one another.
18
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
The largest earthworm on record was found in South Africa and measured 22 feet.
151
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82