do animals have periods?

Question

wow they are all good answers i dont know who to pick for best answer

Answer 1

If you mean menstrual periods, no, not all animals menstruate.
Only the great apes have a menstrual cycle, that is, the reproductive cycle of the females ends with bloody discharge from the uterus.

The great apes are the members of family Hominidae: gorillas (2 species), chimpanzees (2 species), orangutans (2 species), and man. In these species, reproduction and mating may occur throughout the year.

In contrast, other mammalian females undergo an estrous cycle (a "heat" period, with no discharge from the uterine walls). Usually in these cases breeding is limited to one or few times a year.
For example, the blood discharge in female dogs (witnessed by anybody who has kept one as a pet), is blood from the vulvar or vaginal region, which gets swollen and irrigated when the animal is "in heat". This blood does not come from the internal lining of the uterus (endometrium) as in animals with menstrual cycles.

In other animals (non-mammals) there are different types of changes associated with the breeding cycle, but they don't involve menstruation, since other animals don't have uterine implantation of the embryos, or a placenta.

Answer 2

Periods of what....

Only mammals menstruate. Howver, In some mammal species (like ferrets) to do so actually means death (it's too stressful on the body).

Despite what some idiots think, being in heat is not menstruating. menstruation is not a fertile period, but one of infertility where the body is preparing to rid itself of the uterine lining because no implantation has occurred (hence why only mammals menstruate) before the preparation of a new one. You can be receptive and not menstruate (like with birds) and some animals are receptive even when they are menstruating (like humans and other primates).

Answer 3

Mammals do, although most are not on the 28 day cycle as humans. In fact, they even make pads for indoor dogs to keep your house clean during their season.

Answer 4

Primates are the only animals that have a "period", or menstrual cycle, where the lining of the uterus is shed in the event a fertile cycle does not end in pregnancy. Other mammals have an estrous cycle - they have the same hormones and the same organs responding to them as primates, they just don't have a shedding of the uterine wall.

Answer 5

yes, any female mammal has a periods but not like female humans do... animals only have this occur when they are in heat or (when it is time for them to breed) for lack of better words. it's not exactly the same as a humans period either.

Answer 6

Not exactly. Human females have monthly menstruation. Humans also have sexual relations for pleasure and not simply to create a child.

Most members of the animal kingdom go into "heat" when they are ready to mate -- usually once or twice a year. The sole purpose of mating is to create offspring.

Answer 7

Most mammals go into heat on a seasonal basis (once or twice a year) instead of on a monthly basis and if they don't get pregnant their bodies reabsorbs the uterus lining instead of having a period.

Answer 8

yes all female animals have periods or known as being in season or on heat

Answer 9

Yes, they call that time "being in heat"... The ones that answer "no" have obviously never owned a female unspayed dog!!

Answer 10

Yes, it's called 'in heat' or 'in season' and happens one to two times a year. Only human females have periods every month.