From a glowing green sea slug to a lizard with a toad's head, these weird animals are some of the most fascinating creatures in the animal kingdom. There are some really wonky critters out there ...

In the wild, love is anything but ordinary! Some American animals use elaborate dances, bizarre gifts, and even wrestling ...

But if we're not careful, most of those creatures ... Since 2008, ESF has selected 10 newly discovered and named species that demonstrate how large, small, beautiful, and bizarre the unknown ...

Hyenas are weird desert animals that are capable of living to be over 40 years old and are known for their unusual features and behaviors ...