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All domestic animals that are raised for food "give us" medicines: Cattle, pigs, chickens, sheep, goats and even horses. When they are slaughtered for food various parts and substances from their bodies are used in medicine or pharmaceuticals for humans. Snakes (particularly the venomous ones) are also used for and give medicine; their venom is taken and converted to anti-venom to be used on humans and pets that have been bitten by the particular venomous snake that the anti-venom is to be used to treat such a bite.

There exists also the black-market trade for various animal parts that are revered to have some sort of healing power in Chinese medicine or something similar. Poachers kill animals like rhinos and elephants for the tusks and black bears for their gall bladders. This black market industry is really based more on money and poaching and mythical lore than actual medical science. Which is why a lot of the animals that are endangered remain so or have become so in the past.

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12y ago

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