List Of Animals That Menstruate. Dogs in heat, rutting stags and cats in season: In animals with an estrous cycle, it is reabsorbed.
Apart from our close relatives, menstruation also evolved independently in two other groups: If evolution really occures, then animals should have menstruated and humans womb lining should have absorbed in the body demanding a cleaner and facilitating life to the humans than animals. It produces the female egg cells necessary for reproduction, called the ova or oocytes.
Sometimes this involves a bit of blood.
Menstruation, also known as a period or monthly, is the regular discharge of blood and mucosal tissue (known as menses) from the inner lining of the uterus through the vagina. It is similar to a woman's menstrual cycle except that it only happens twice a year. All other placental mammals have an estrous cycle. Menstruation has been found in four bat species in two families, phyllostomidae and molossidae, and elephant shrews/sengis, relatives of elephants and aardvarks.