Female dogs go through a heat cycle, called estrus, every six months. She will have proestrus, or a bleeding cycle, before her true heat cycle during which she is very receptive to the advances of male dogs. This heat cycle lasts for several days up to three or four weeks. Some female dogs will undergo personality changes during this time, the most common changes being anxiety and irritability.
0 dayz.... coz mid cycle is fertilized egg...., enn mid cycle bleeding doesnt occur..., bleeding only occurs on the last dayz of the period..
No not normally as the mares heat cycle is affected by the amount of daylight not the temperature around her.
A dog's nipples may swell during of after her heat cycle. They can stay swollen for up to two weeks after her heat is finished. If they stay swollen longer than that, it's time to have her checked out by a vet.
It last for 3 weeks,by the 2nd week she will bleed and by 3rd week she will want to be with a male, its called flagging, she will lift her tail and move it to the side so the male can get to her easy.
Generally 12 days, however the cycle lasts 21 days every six months.
depends on your cycle...ie how long is your cycle add it on to the date of last period
The menstrual cycle begins with day 1 which is the first day of bleeding. The last day of the cycle is the day before the next period begins.
Spotting varies with each dog but typically last three to five days. The heat can last up to three weeks.
It'll be 17 to 24 days til her next heat.
My dogs first heat cycle lasted about 4 weeks.
When its been more than 7 days and if its heavy.