Image: Flickr/Petra Bensted
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 behaviour between a male Japanese macaque and female sika deer. "Interspecies sexual behaviour or 'reproductive interference' has been reported across a wide range of animal taxa. However, most of these occurrences were observed in phylogenetically close species and were mainly discussed in terms of their effect on fitness, hybridization and species survival. The few cases of heterospecific mating in distant species occurred ...
