17 Animals That Menstruate and Have Periods
Menstruation is often considered a uniquely human experience, but science tells a far more fascinating story. While most mammals reabsorb their uterine lining instead of shedding it, a small and remarkable group of animals actually go through a true menstrual cycle—complete with hormonal shifts, endometrial buildup, and bleeding. Researchers estimate that fewer than 2% of …












