Dog Estrus Cycle

Canine sexual anatomy and development General.

Dog estrus cycle. The female is interested in male dogs but its all about flirting rather than mating. This stage is when mating takes place. Most dogs have two estrous cycles per year.

Female dogs stay in estrus in variable time frames but it averages around 3-4 days. At about the 14th day or whenever estrus ends the final or luteal stage of the cycle begins. What Is The Estrus Cycle.

Estrus is the second stage in the dog heat cycle. The Proestrus Stage Getting Ready Lasting around 9 days this first stage is marked by the eggs in the ovaries beginning to mature and the estrogen levels start rising. Watch for defensive aggression that warns males to back off.

Eggs develop in follicles on the ovaries and produce estrogen. In domestic dogs sexual maturity occurs between the ages of 6 to 12 months for both males and females although this can be delayed until up to two years of age for some large breedsPregnancy is possible as soon as the first estrus cycle but breeding is not recommended prior to the second cycle. The Bitchs Heat Cycle A normal heat cycle lasts approximately three weeks within which the bitch will go through different stages.

The canine estrous reproductive cycle is made up of 4 different stages. On average a dog will be in heat for 1½ to 2 weeks but this can be shorter or longer. Estrus averages 9 days in duration but can be as short as 3 days or as long as 21 days.

This cycle involves a 3 to 4 week period in heat when the body is getting ready to mate and prepares the womb for pregnancy. It can last between 130 and 250 days. During this stage the females are not sexually active.