It can be as short as a couple of hours or as long as a few days. But it is usually around 1-2 days?
On average, the menstrual cycle (oestrus) of a female goat occurs approximately every 17 to 23 days.
about three weeks
Oestrus cycle are present is most of the mammals. The females becomes sexually receptive during the oestrus phase. They express the desire for mating at this stage. In case of the humans the females are more receptive at the time of ovulation. But there are many exceptions. In case of the oestrus cycle the endometrium is reabsorbed. In case of the menstruation the endometrium is shed away to give the phenomena called as menstruation.
Pro-oestrus, where the vulva swells and there is clear, then bloody, discharge. The female is often nervous.
Oestrus, also known as estrus, is the period in the sexual cycle of female mammals when they are sexually receptive and able to conceive. It is characterized by hormonal changes that result in behavioral and physical signs indicating fertility. Oestrus cycles vary in duration and frequency among different species.
If you are talking about oestrus to do with female animals (e.g. the cow in oestrus) it means that that animal is in heat. They are ready and capable to mate.
The estrus cycle is regularly occurring period of sexual receptivity in most female mammals, except humans, during which ovulation occurs and copulation can take place. In some animals it happens once a year and in some twice a year. This is not the same as the menstrual cycle in humans.
Oestrus
All goats regardless of gender will drink water, with the exception of young nursing kids (baby goats) whom will drink milk early in the life cycle, then slowly be weaned onto drinking water.
it means that your cat is not healthy
The typical menstrual cycle is around 28 days long. Everyone has a different cycle length, also it's normal for there to be a few days variation from one cycle to the next.
To calculate the length of a cycle, you have to calculate the last day you see your periods and the first day that you see them.