From the skin of poisonous frogs?

The golden poison frog, like most other poisonous frogs, stores its poison in skin glands.

The poisonous frogs are perhaps the only creatures to be immune to this poison.

Steve gets hands-on with a poisonous frog and nearly gets a nip from a vampire!

In such a case, he used poisonous frogs to protect Jolyne against Pucci.

Spittor is a Predacon who turns into a poisonous frog.

"As do anacondas, boas, coral snakes and poisonous frogs and toads."

The Kokoe poison frog is the third-most poisonous of the poison dart frogs.

Other trousers and dresses are pieced leather in patterns like those on the backs of poisonous frogs.

This, they calculate, is well below the level found on the skin of most poisonous frogs.