5. Millipede
Closely related the centipede, some millipedes emit poisonous liquid secretions or hydrogen cyanide gas through microscopic pores on their body. Some of these substances are caustic and can burn the exoskeleton of ants and other insect predators, and the skin and eyes of larger predators.
4. Cone Snail
The cone snail has a proboscis which is used for feeding as well as the launching of itÂ’s harpoon. The harpoon is a hollow, barbed organ that acts as the tongue. When ready, the snail will extend the proboscis towards itÂ’s prey and with a muscular contraction will fire the harpoon filled with venom. The cone snailÂ’s bite is similar to a bee sting, but the larger species are responsible for 30 known cases of human death.
3. Slow Loris
The Slow Loris is one of the few mammals which is venomous. In addition, it is the only mammal which is both venomous and poisonous at the same time. Slow lorises produce a toxin on the inside of its elbows which it smears on its young to prevent them from being eaten. In addition it will lick these patches to put the poison in its mouth, giving it a venomous bite used for self defense.
2. Komodo Dragon
While they do not technically produce venom, their diet consists of pretty much anything dead and that creates a special mixture of deadly bacteria build up in their mouths. Their saliva contains more than 50 types of bacteria and 7 are highly septic and 4 have no known specific antidote. However, if treated with powerful antibiotics, it proves non-fatal to humans.
1. Coral
There are many types of coral and a few of these have toxic chemicals that are not fully researched yet. The most deadly coral is the Palythoa. It can kill a rabbit with only a 25 nanogram injection. To kill a human would only take 4 micrograms. Palytoxin is considered one of the most toxic organic poisons. Symptoms of palythoa poisoning include chest-pains, difficulty breathing, racing pulse and low-blood pressure. Death occurs within minutes, and there is no treatment.
(source:
The List Universe)