List of venomous animals

Numerous animal species naturally produce chemical toxins which are used to kill or incapacitate prey or as a defense against predators.

Strictly speaking, all spiders and scorpions possess venom, though only a handful are dangerous to humans.

Spiders typically deliver their venom with a bite from piercing, fang-like chelicerae; scorpions sting their victims with a long, curved stinger mounted on the telson.

Of more than a thousand known species of scorpion, only a few dozen have venom that is dangerous to humans,[6] most notably the bark scorpions, including: Many species of octopus, squid, and cuttlefish make use of venom when hunting their prey.

Glyceridae, also called bloodworms, is a family of carnivorous polychaete worms which have an eversible proboscis equipped with four jaws connected to venom glands, used for killing the invertebrates they feed on.

Many venomous animals, such as this greater blue-ringed octopus ( Hapalochlaena lunulata ), are brightly colored or can display bright colors to warn potential predators
Latrodectus mactans , one of several venomous North American black widows
Synanceia verrucosa , a species of stonefish , is lined with dorsal spines that deliver an intensely painful and lethal venom. It is sometimes called the most venomous fish in the world.
The black mamba has one of the deadliest bites of any snake