Zoophilia, from the Greek ζῷον (zṓion, "animal") and φιλία (philia, "friendship" or "love"), is the practice of sex between humans and animals (bestiality), or a preference or fixation on such practice. A person who practices zoophilia is known as a zoophile.

Although sex with animals is not outlawed in some countries, it is not explicitly condoned anywhere. In most countries, such acts are illegal under animal abuse laws or laws dealing with crimes against nature.

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