In recently captured wild lorises, saliva and other secretions were found to contain batrachotoxins -- the same poisons found in dart frogs. The diet of a wild loris may include venomous creatures or poisonous plants whose toxins may be passed on in the mammal's bite.
The rat is known to deliberately smear its fur with poison from the bark of a tree called the Acokanthera schimperi. It also likes to chew on the tree, which is highly poisonous. As a result, anything that even tries to bite this critter can get sick or even die.
There's venom in that cute little mouth. The poison is delivered through a grooved lower incisor, syringe-style. It won't kill a human, but if you run across one, handle it with gloves. That's what the pros do.
You'd think sharklike fish would be satisfied enough with sharp teeth and cold, terrifying eyes, but apparently not. Unlike almost all other sharks, the dogfish category, including this one, has a dorsal spine coated in venom.
Despite the grin on this guy's face, holding this bird with your bare hands is a bad idea...
Published:Caption:Leslie GornsteinPhoto:Steve Kagan/The LIFE Images Collection/Getty Images
Pitohui: Spit it out!
The skin and feathers of some of these birds, called pitohui, are highly poisonous. That's because the birds dine on toxic beetles. In Papua New Guinea, where the birds live, the people won't eat the bird unless they're desperate, and then only after the bird has been properly plucked and skinned.
A goose? That's poisonous? If you're in sub-Saharan Africa, then yes. Don't bother cooking this native bird. Like the other birds on this list, it eats poisonous beetles. And in a high enough quantity, that poison is powerful enough to kill a person.
It's quite admirable, the way that this sea ginger wrapped itself around a glass bottle and everything. But don't try to congratulate it. This animal, which looks like a coral but is actually closer to a jellyfish, has a venom that can cause a painful sting for a human.