Plural of anestrus; periods of sexual inactivity or reproductive rest in female animals.
Plural of 'anestrus' from Greek 'an-' (without) + 'oestrus' (the reproductive cycle). A veterinary and zoological term describing non-breeding periods.
Many wild animals have anestri—periods where they don't breed at all, often triggered by seasons or food availability. This is nature's way of making sure babies are born at the best time of year to survive.
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