Numerous animal species naturally produce chemical toxins which are used to kill or incapacitate prey or as a defense against predators. Venomous animals actively deliver their toxins (called venom) into their target through a specially evolved mechanism, such as a bite or sting, by using a venom apparatus, such as fangs or a stinger, in a processes called envenomation. They are often distinguished from poisonous animals, which instead passively deliver their toxins (called poison) to their victims upon contact such as through inhalation, absorption through the skin, or after being ingested. The only difference between venomous animals and poisonous animals is how they deliver the toxins. This list deals exclusively with venomous animals.