Sounds like one for lurid headlines and plenty of suggestive jokes -- and Australians are up to that challenge if anyone is:

Over a period of two or three weeks, the antechinus has sex practically nonstop until its body disintegrates. You could say it dies of sexhaustion. ...

It's so exhausting that the male's fur falls off, he starts to bleed internally and his immune system shuts down. Before long he's riddled with gangrene.

Meet the antechinus, a mouse-like Aussie marsupial that kills itself by having too much sex | Space, Military and Medicine | News.com.au