As if guys didn't have enough reasons not to have sex with animals, a new study offers up one more.
The study in the Journal of Sexual Medicine found that men who have had sex with animals were twice as likely to develop penile cancer.
According to a report in The Huffington Post , the lead author of the study explained the practice could result in micro-traumas in the human penile tissue and the animals' secretions may be toxic to us.
A female member of Equality for All , a pro-zoophilia group, told The Huffington Post said the study may prompt people to take precautions, like using condoms, but would not likely deter die-hard zoophiles.
The study was based on a questionnaire completed by 118 penile cancer patients and 374 healthy men recruited between 2009 and 2010.
The research also found that people who said they had had sex with animals reported more venereal diseases, according to The Huffington Post.
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