Most Poisonous Frogs On The Planet

Many frogs contain mild toxins that make them unpalatable to potential
predators. Some of them, such as poison dart frogs, are especially
toxic. The chemical makeup of toxins in frogs varies from irritants to
hallucinogens, convulsants, nerve poisons, and vasoconstrictors. Many
predators of frogs have adapted to tolerate high levels of these poisons. Others, including humans, may be severely affected.[...]