venomous snake
Quick Summary
Venomous snakes are reptiles that possess specialized glands producing venom, which they inject through fangs. This venom is a complex mixture of toxic enzymes and proteins that can immobilize or kill prey, or serve as a defensive adaptation. While many snakes are venomous to some degree, only a small percentage are capable of inflicting a bite that is lethal to humans.123
The term "poisonous" is often incorrectly used for venomous snakes. True poisons are ingested, whereas venoms are injected. Snakes control the amount of venom they inject, and many bites on humans are defensive and "dry," meaning no venom is delivered.3
Despite their dangerous capabilities, most venomous snakes are not aggressive towards humans and will only strike if they feel threatened or provoked. The majority of snakebite fatalities occur in regions with limited access to proper medical care and a high density of venomous species.3
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