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The original was posted on /r/todayilearned by /u/anarchosnufkin on 2024-11-03 00:20:17+00:00.

Original Title: TIL female bats of some species are able to store sperm inside their reproductive tracts for several months. In this way, they can mate in the autumn but conceive in the spring, and thus avoid raising young in the middle of winter. Some animals can store sperm for years.