Although we humans can't get infected with animal STDs, zoophilia is highly discouraged.
But non human animals themselves can have STDs, and most of them are caused by protozoa, bacteria or viruses. The transmission only occurs between animals of the same species - so far, infection between different species through sexual relations haven't been found - because the transmitting agents are species specific.
HIV -1, however, is a different story. It didn't infect humans because of zoophilia, but because of the contact of human hunters with contaminated chimpanzee blood, becoming a case of disease transmission between species.
But non human animals themselves can have STDs, and most of them are caused by protozoa, bacteria or viruses. The transmission only occurs between animals of the same species - so far, infection between different species through sexual relations haven't been found - because the transmitting agents are species specific.
HIV -1, however, is a different story. It didn't infect humans because of zoophilia, but because of the contact of human hunters with contaminated chimpanzee blood, becoming a case of disease transmission between species.
~Ally