Over the last 150 years, the males of certain invasive mongooses have undergone some serious tweaks to their sexual anatomy. New research suggests that the mongooses’ anal pads—which produce a scent that is apparently very alluring to female mongooses—have become comparatively shrunken, while their testicles have…
https://gizmodo.com/mongooses-stink-less-have-bigger-balls-after-invading-1841569197