Venom or zootoxin (literally, animal poison) is any of a variety of poisons used by several groups of animal species, for the purpose of defense and hunting prey. Though subjective, the definition of a venom differs from a poison (as used in most zoology and medicine texts). Generally, a venom is defined as a biologic toxin that is injected to cause its effect while a poison is a biologic toxin which is absorbed through epithelial linings (either of the gut or through the skin).

The animals most widely known to use venom are snakes, some species of which inject venom into their prey through hollow fangs, spiders and centipedes, which also inject venom through "fangs," scorpions, and stinging insects, which inject venom with a sting (which is in fact a modified egg-laying device - the ovipositor). There are also many caterpillars that have defensive venom glands associated with specialized bristles on the body, known as urticating hairs, some of which can be lethal to humans (e.g., the Lonomia moth). Venom is also found in other reptiles besides snakes such as the gila monster, mexican beaded lizard, iguana, and various species of monitor lizard. Other insects, such as true bugs ^*, also produce venom.

Venom can also be found in some fish such as the stonefish, scorpionfish, rabbitfish, weever fish, cowfish, boxfish, sabre-toothed blennies, chimaera fish, weaver fish, squirrelfish, scat fish, stingrays, and some toadfish and catfish; as well as some jellyfish, mollusks, amphibians, and even in a few mammals like the platypus, and some shrews.

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Photo: aaaaaaaaaaaaawwwwwwwwwwwwww venom-orochi: i can haz nom noms?? oh! i can haz tumblarity!! http://tumblr.com/xda4n3kt6
grievous_pechan (Marco Cifuentes) Sat, 12 Dec 2009 21:01:17 -0000
Photo: aaaaaaaaaaaaawwwwwwwwwwwwww venom-orochi: i can haz nom noms?? oh! i can haz tumblarity!! http://tumblr.com/xda4n3kt6
i think Venom Spits is a man .or a fake profile...either or....CRUDLEY written all over it.
BLive (B Live aka Evil B) Sat, 12 Dec 2009 21:00:10 -0000
i think Venom Spits is a man .or a fake profile...either or....CRUDLEY written all over it.
Logo mais vou fazer uma visitinha ao inferno... show do VENOM em São Caetano do Sul!
edugfoto (Edu Guimarães) Sat, 12 Dec 2009 20:57:09 -0000
Logo mais vou fazer uma visitinha ao inferno... show do VENOM em São Caetano do Sul!
Man shut the fuck up u ugly ass nigga u look like venom off of spider man @OnlineTHUG
Kellz_izILL (KellZ) Sat, 12 Dec 2009 20:56:29 -0000
Man shut the fuck up u ugly ass nigga u look like venom off of spider man @OnlineTHUG
@ShamanOfHedon Aw, it didn't actually warm my heart, but it did make me more acidic...thanks! Now my venom is more potent.
Mowgli3 (Sarah Moglia) Sat, 12 Dec 2009 20:54:38 -0000
@ShamanOfHedon Aw, it didn't actually warm my heart, but it did make me more acidic...thanks! Now my venom is more potent.
#8: DuWop Twilight Venom http://ff.im/cP3YA
sharonjbrowns (Sharon J. Brown) Sat, 12 Dec 2009 20:51:35 -0000
#8: DuWop Twilight Venom http://ff.im/cP3YA

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