That Koala is a little furry Hannibal Lecter. And that person should definitely go get an STD test ASAP. Not really, though Koalas are intresting in that the majority of their population carry two different strains of Chlamydia, one of which humans can contract, though it can only be contracted if a Koala urinates on a person. However, people who want to cuddle these creatures need to be aware they don't really care where they pee, so in order to avoid a really awkward doctor's visit, and a lot of questions and being called a liar, best to avoid it and just take a selfie. But this isn't the only case of an animal that can transmit diseases to humans. Get your rubber gloves ready and read through this list of diseases you can catch from animals at your own peril.