I have the common allergy to nickel, and such. I think tats are cool, but my lily white skin is pretty sensitive to lots of things.
Except for mosquitoes and poison ivy, for some reason. Spider bites and wasp stings are nasty for me, bees not so much.
DNA weirdness. But yea... tree frogs are cool as shit. So are dragonflies. The YL has a neato dragonfly tat.