Monkey on deer sex: it happens.

If you're looking for weird interspecies sex, look no further than Japan. Not only do Japanese macaques like to ride deer (!), but according to this study, at least one male Japanese macaque likes to have sex with them... and some of the deer let him do it. Apparently, interspecies sex is really rare in the wild. In fact, the only previous report was that of "sexual harassment of king penguins by an Antarctic fur seal." As they say, "Whatever spanks your monkey!". Interspecies sexual beha