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reptile


cold-blooded animal with a backbone

Snakes are one type of reptile.

mammal


warm-blooded animal whose young feed on milk produced by their mother

Many different mammals live on Earth, including dogs, whales, and humans.

toxin


poisonous chemical made by a living thing

Jellyfish venom contains toxins that cause a painful sting.

antivenom


medicine used to treat venomous bites or stings

A victim can survive a deadly snakebite if given antivenom in time.

stroke


when blood flow is cut off to part of the brain

A blood clot in the body can lead to a stroke.

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