- This is the first stage of the estrous cycle and typically lasts for 9-10 days.
- During this stage, the female dog's body starts to prepare for ovulation.
- The vulva will appear swollen and reddish, and there may be some bloody discharge.
-The female dog may also show an increased interest in male dogs, but she will not be receptive to mating.
Estrus:
- This is the second stage of the estrous cycle and typically lasts for 5-7 days.
-During this stage, the female dog is fertile and receptive to mating.
-The vulva will continue to appear swollen and reddish, and the discharge will become thinner and clearer.
- The female dog will also be more affectionate and playful than usual, and she may lift her tail and present her hindquarters to male dogs.
Diestrus:
- This is the third stage of the estrous cycle and typically lasts for 60-90 days.
-During this stage, the female dog's body starts to return to its normal state.
-The vulva will shrink and the discharge will cease.
- The female dog will not be receptive to mating.
Anestrus:
- This is the fourth and final stage of the estrous cycle and typically lasts for 3-4 months.
-During this stage, the female dog's body is at rest and not preparing for ovulation.
-The vulva will appear small and closed, and there will be no discharge.
- The female dog will not be receptive to mating.