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.
Because she is dominant or not in heat.
The first heat cycle for a female dog would be between 6-24 months. If she doesn't have her first cycle by then, you take a trip to the vet. And it doesn't necessarily matter what kind of dog it is to have a certain heat cycle. Hope this helps!
The heats are a regular cyclic occurence. you cann;t "bring it on" but you can time them an make areaosnable prediction of when they will occur.
You can't. They usually come into heat every six months, providing they are healthy.
This is normal - not all dogs spot or bleed during their heat cycle.
Whilst it is possible to breed from a German Shepherd on her first heat cycle, this is NOT advisable. As your dog is still developing at this age, if she becomes pregnant she will have to give her vital nutrients and vitamins to her growing puppies, which would stunt her growth. It may also be damaging to both her physical and mental well-being as she is too young. You should wait until she has had at least three heat cycles before breeding from her.
Keep her away from males, and try to keep her in a no carpeted aea to avoid bleeding.
This is possible. But mainly not till 6 to 12 months of age will you have to start to worry much
Angus cows or heifers come into heat every 21 days.
Air conditioning will expel heat to the outside when cooling. On the heat cycle the reverse is evident
This is an increase in the size of the vulvar lips, typically during the fertile portion of the dog's heat cycle. This is a normal aspect of the heat cycle, but is abnormal in spayed dogs.
Whilst it is possible to breed from an Australian Shepherd on there first heat cycle, this is NOT advisable. As your dog is still developing, if she becomes pregnant she will have to give her vital nutrients and vitamins to her growing puppies, which would stunt her growth. It may also be damaging to both her physical and mental well-being as she is too young. You should wait until she has had at least three heat cycles before breeding from her.