The Andean poison dart frog (Dendrobates opisthomelas).
The skin of poison dart frogs has been found to contain substances with medicinal value, including a painkiller 200 times more powerful than morphine.
© Robin Moore
Yay evolution! So I just found out that poisonous frogs (Like Dendrobates lehmanni up there just fyi) have better stamina and aerobic capabilities than non-poisonous frogs. Cool I guess? But why? The idea is that poisonous frogs, who derive their toxicity not from producing it on their own but from having to find certain toxic insects to steal the poison off need to be able to roam further. Thus they evolved to be better at long distance journeys in order for them to equip themselves with a poisonous defense.
That and they just look really cool.
Fuck yeah, they do!