Poison vs Venom: What's the Difference?
Venom is injected; poison is delivered by touch or ingestion. Clear definitions, animal examples (snakes, frogs, jellyfish), and why the distinction matters.
Global Animal Guide · July 10, 2026
Quick answer
Venom is a toxin actively injected through a bite, sting, or spine. Poison is a toxin that harms when touched or eaten — the animal does not inject it. Rattlesnakes are venomous; many poison dart frogs are poisonous. Some animals are both (e.g. certain newts and spurred platypuses blur lines depending on delivery).
Last updated: July 2026.
Memory trick
If it bites you and you die, it was venomous.
If you bite it and you die, it was poisonous.
(Imperfect, but useful.)
Venomous animals
Snakes, spiders, scorpions, cone snails, jellyfish, stonefish, platypus males (spurs), bees and wasps — toxins delivered through specialised apparatus.
Poisonous animals
Poison dart frogs, many newts, pufferfish flesh (tetrodotoxin), monarch butterflies (cardenolides from milkweed) — toxins stored in tissues or skin.
Why it matters
First aid differs. Antivenoms target injected venoms. Eating a poisonous animal is a food-safety problem. Mislabeling spreads myths and bad medical advice.
Related reading
Frequently asked questions
Is a snake poisonous or venomous?
Venomous — snakes inject toxins with fangs. Calling them poisonous is a common mistake.
Are poison dart frogs venomous?
No — their skin toxins are poisonous if touched or eaten; they do not inject venom.
Can something be both?
Yes — for example, the slow loris can deliver a toxin via bite (venom-like), and some fish have both spines and toxic flesh.
Which kills more people — venom or poison?
In wildlife contexts, venomous snakebites cause far more human deaths than poisonous frogs; mosquitoes (disease vectors) kill more than either.