Men who put their penises in animals have a higher likelihood of penis cancer, a new study in the Journal of Sexual Medicine reports:

We think that the intense and long-term SWA [sex with animals] practice could produce micro-traumas in the human penile tissue. The genital mucus membranes of animals could have different characteristics from human genitalia, and the animals' secretions are probably different from human fluids. Perhaps animal tissues are less soft than ours, and non-human secretions would be toxic for us.

Is there a take-away lesson from this story? The Huffington Post offers:

A member of a pro-zoophilia group told The Huffington Post by email that the results of the study should prompt people to take precautions, like using a condom, when having sex with animals.

A bold and stirring call to action. If you like this story, the Huffington Post also recommends "16 WAYS to Drive Your Goat Lover WILD," "PHOTO: Marmaduke Nip Slip" "GALLERY: Sexy Sheep of the Meadow." [HuffPost, image via Shutterstock.com]