No matter how inviting they may look.
In a study of 492 men from rural Brazil, 35 percent reported having had sex with an animal at men who had sex some point in their lives. The report found those men were twice as likely to develop cancer of the penis.Gotta say, I'm convinced, Brrrrrrrr!
The paper was authored by a team of urologists from centers around Brazil and studied men from age 18 to 80. Men who had had sex with animals also reported a higher incidence of sexually transmitted diseases. Of the 118 penile cancer patients, 45 percent reported having had sex with animals, compared to 32 percent of healthy men. Fifty-nine percent of men who had sex with animals did so for one to five years, while 21 percent continued the behavior, also known as zoophilia, for more than five years.
source
As if I needed even ONE reason.....:slap: