Menstrual cycle | Oestrus cycle |
Menstrual cycle occurs in primates. | Oestrus cycle occurs in non-primate animals. |
Menstrual cycle consists of proliferative, secretory and menstrual phase. | Oestrus cycle does not possess such phases and is comparatively less complex than menstrual cycle. |
During menstrual cycle, sexual receptivity may occur throughout the menstrual cycle. | In oestrus cycle, sexual receptivity occurs usually in between the oestrus cycle. |
Example- Humans and apes | Example- Cow and Dog |