Why/how are pigs used to find truffles? Do they have a natural affinity for them?
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Truffles produce a scent caused by the same chemical in boar pheromones that female pigs find very sexy. Truffle sows smell smell it and go crazy, trying to dig up what smells like a hot hunk of a pig hiding underground. Truffle dogs on the other hand need to be trained to identify what a truffle smells like, so yes, pigs have a natural affinity for them.
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