Menstruation is a cycle that happens every month in women before menopause. But other than humans, it turns out there are other female mammals also experience menstruation.
Basically, only humans and great apes (gorillas, orangutans, chimpanzees and bonobos) that really shows the menstrual cycle. But the truth of other mammals also experience menstruation. However, menstruation in other mammals do not like menstruation in humans.
Reporting from Madsci, Friday (29/10/2010), several species of menstruating monkeys, lemurs, horses, buffaloes, giraffes, zebras, rhinos, cats, dogs, rats trees, elephants, porcupines and wolves.
In humans, the uterine wall entirely due to the absence of fertilization is characterized by bleeding that usually lasts 3 to 7 days. On average during the human menstrual blood loss 10-80 mL.
In humans, the average menstrual cycle occurs approximately 28 days, although this is generally accepted, but not all women have the same menstrual cycle, sometimes the cycle occurs every 21 days to 30 days.
While the great apes belong to regular menstrual cycles. Menstrual cycle length varies, an average of 29 days in orangutans and 37 days in chimpanzees.
Unlike humans and great apes, in other mammals the process of menstruation can be said to be 'silent', because the decay process of the uterine lining (endometrium) that is characterized by bleeding it is not externally visible or invisible.
When no fertilization occurs, the uterus will absorb the uterine wall so that no bleeding. There are several memalia who experienced bleeding, but bleeding is quite mild and very brief, so many people who do not know.
Other mammals also do not menstruate regularly every month, but only a few times a year.
Source: http://ziunik.blogspot.com/2010/10/inilah-makhluk-lain-yang-bisa.html
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