What Animals Have Periods. Other animals in this small group include the elephant shrew, bats and the spiny mouse. Gerbils are in heat for around four days to six days at a time.
Most female animals have a period; Female humans and their closest mammalian relatives have menstrual cycles during which the uterine lining sheds outside the body once every 28 to 38 days (there are always variations, of course). Humans, primates and some other mammals (bats, african elephant shrews and certain tree shrews) have such a thick endometrial lining that part of it is being shed through the vagina.
Answered dec 27, 2020 by renee4suv.
Humans, primates and some other mammals (bats, african elephant shrews and certain tree shrews) have such a thick endometrial lining that part of it is being shed through the vagina. A period happens because of changes in hormones in the body. At most, they likely have a few tens of periods. Yes, a female dog has a menstrual cycle—unless she’s spayed.