A tiny mouse hints at why some mammal mothers may benefit from choosing more than one father - Peer2Peer

A tiny mouse hints at why some mammal mothers may benefit from choosing more than one father

Jan 13, 2026

Many animals do something that still surprises researchers: females often mate with more than one male. This behavior—polyandry—has long raised a blunt question. Why divide offspring among multiple fathers, and does it help mothers or young survive?

https://phys.org/news/2026-01-tiny-mouse-hints-mammal-mothers.html

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