Animals don't have safe sex, why don't they get STD's? Kenley Darling - Nevada Oh boy, our furry forest friends get STD's faster than amateur porn stars. In fact a lot of koala bears have chlamydia. Primates can get a disease similar to HIV in humans called SIV. It's probable that syphilis came from sheep or cattle. dolphins get genital warts, and rabbits can get syphilis. Dogs and cats both have their own strains of herpes virus. And the Tasmanian Devil has a weird STI that cause a very aggressive and strange form of face cancer, tumor thing. It prevents them from hunting and feeding. But wait! There's more! The fun is not just limited to our furred friends! Birds can get chlamydia and also give it to humans and cats through bites and scratches after they are infected. Reptiles also can get STIs like chlamydia and gonorrhea. Also insects have their own weird STIs. I just wanna jump in here about the Tasmanian Devil facial tumour disease. The disease is not thought to be spread sexually, instead through biting, as generally the devils will bite each other when fighting over food. It can also be transferred through eating the same carcass as an infected devil. Interestingly, it is one of the few forms of infectious cancer.