Physical Changes:
* Swollen vulva: This is the most obvious sign and usually the first to appear. The vulva will be significantly larger and more red than usual.
* Bloody discharge: This is called "proestrus" and typically lasts for 7-10 days. The color of the discharge may change from bright red to a light pink or straw-colored.
* Increased urination: Your dog may urinate more frequently and in larger amounts. This is a way for her to scent-mark her territory and attract male dogs.
* Restlessness and anxiety: She may seem more agitated and restless than usual, especially when around male dogs.
Behavioral Changes:
* Increased affection: Your dog may be more cuddly and affectionate than usual, especially towards humans.
* Increased vocalization: She may whine, bark, or howl more frequently than usual.
* Attracting male dogs: You may notice a change in the way male dogs react to her. She may even attract unwanted attention from males in the neighborhood.
* Mounting behavior: This is less common but sometimes dogs in heat may try to mount other dogs or even objects.
Timing:
* Heat cycles typically occur every 6 months, though this can vary. The first cycle usually happens between 6 months and 2 years of age.
Important Considerations:
* Spaying: If you don't intend to breed your dog, spaying is the most effective way to prevent heat cycles and unwanted pregnancy.
* Consult your vet: If you have any concerns about your dog's health, it's best to consult with your veterinarian. They can help you determine if your dog is in heat and provide advice on how to manage her during this time.
Remember that every dog is different, so the signs of heat may vary from one dog to another.