Oestrous cycle facts for kids
The oestrous cycle (U.S: estrous cycle) is the reproductive system in most mammals.
Reproductive hormones cause the cycles to start after puberty in sexually mature females. They are interrupted by non-breeding phases or by pregnancies. Usually estrous cycles continue until death.
Images for kids
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Overview of the mammalian estrous cycle
See also
In Spanish: Ciclo estral para niños
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Oestrous cycle Facts for Kids. Kiddle Encyclopedia.