The largest earthworm on record was found in South Africa and measured 22 feet.
151
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
A dork is a whale's penis.
327
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6