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The original was posted on /r/todayilearned by /u/carboncopy95437 on 2025-06-24 03:54:47+00:00.

Original Title: TIL the antechinus is a small, mouse-like marsupial from Australia. During mating season, the male engages in frenzied 12-hour mating marathons with multiple females, pushing his body to the brink. The stress is so extreme that it often leads to organ failure and death shortly afterward.