Just because an animal is venomous doesn't mean it's poisonous. Venom is typically injected while poison is a secretion through the animals skin or other method. Take a poison dart frog for example, they are certainly poisonous, but not venomous. Snakes are venomous (not meaning all snakes). Poison is typically ingested orally (although there are some exceptions to that rule) and venom is inject by way of fangs.
Hope this helps. Did you try posting this in the venomous forum?
Chris
>>Ok last night we somehow go into the discussion of venomous snakes and they said "poisonous" snake and i said no there is no such thing as a poisonous snake this is where people go wrong.... they agreed a snake was venomous but they think since the snake being venomous means its poisonous. So I need you guys to reply the right answer so then i can print this topic out and show them since we have a bet going on this.
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>>thanks