How Long Are Dogs Pregnant? Dog Ge…
https://www.akc.org/expert-advice/dog-breeding/how-long-are-dogs-pregnant/
Intact female dogs go into heat approximately every six months, although this can vary depending on the dog and the breed. The heat cycle lasts 18-to-21 days and is broken into four distinct stages. Breeders use these stages to determine the best time to breed their dogs. Proestrus: The start of heat. Lasts 7 to 10 days. Vulva swells and blood flows. Females attract males but will not allow mounting. Estrus: The mating period. Lasts 5 to 10 days. Blood flow lessens and then stops. Diestrus: The period 10 to 140 days after heat, when the dog is either pregnant or in a resting phase. Proestrus—Start of heat. Lasts 7 to 10 days. Vulva swells and blood flows. Females attract males but will not allow mounting. Estrus—Mating period. Lasts 5 to 10 days. Blood flow lessens and then stops. ...
Proestrus: The start of heat. Lasts 7 to 10 days. Vulva swells and blood flows. Females attract males but will not allow mounting.
Estrus: The mating period. Lasts 5 to 10 days. Blood flow lessens and then stops.
Diestrus: The period 10 to 140 days after heat, when the dog is either pregnant or in a resting phase.
Proestrus—Start of heat. Lasts 7 to 10 days. Vulva swells and blood flows. Females attract males but will not allow mounting.
Estrus—Mating period. Lasts 5 to 10 days. Blood flow lessens and then stops. ...
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