What is the first sign of a dog starting her estrous cycle?

The earliest sign of estrus is swelling or engorgement of the vulva, but this swelling is not always obvious. In many cases, a bloody vaginal discharge is the first sign that a pet owner will notice when their dog comes into heat.

How do you know your female dog is about to start her period?

When your dog is in heat, there are both physical and behavioral signs. For example, she’ll typically urinate more than usual, and there will be a blood-tinged discharge and swollen vulva. … Your dog may also seem nervous, distracted, and be receptive to male dogs.

What are signs that your dog is about to go into heat?

What Signs Indicate That My Dog Is in Heat?

  • Swollen vulva.
  • Bloody or straw-colored discharge from the vulva.
  • Receptive to male dogs.
  • Excessive licking of the genital area.
  • Agitated, nervous, or aggressive behavior.
  • Urinating more frequently.
  • Change in tail position.

What is the first stage of heat cycle in dogs?

The first stage of the dog heat cycle is called proestrus. This stage can last from 3 to 17 days, but many dogs experience about 9 days in proestrus. The first sign of this stage is the swelling of the vulva.

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At what age do female dogs get their period?

On average, puberty (or sexual maturity) is reached at about six months of age, but this can vary by breed. Smaller breeds tend to have their first estrous cycle at an earlier age, while large and giant breeds may not come into heat for the first time until they reach eighteen months to two years of age.

Do girl dogs bleed every month?

If you’re thinking of adopting a female dog, you may wonder if female dogs have periods, or if you live with one that isn’t spayed you might be curious as to why she is bleeding. Female dogs do undergo a regular cycle and bleed once they reach maturity, if they are not spayed.