When a dog enters estrus, it will show some obvious behavioral and physiological changes. The following are common symptoms of dogs in heat:
1. Swelling and bleeding of the vagina: The dog’s vagina will swell and secrete mucus or bloody discharge. This is one of the earliest signs that a dog is in heat.
2. Induced sexual behavior: Dogs may show increased interest in other dogs, crouching down and twisting their hips symbolically, or barking and calling to other dogs.
3. Chasing by male dogs: A female dog in estrus will attract male dogs around her, and the male dogs will chase the female dog and show chasing behavior.
4. Spraying urine: Some female dogs in heat may frequently mark the ground, walls, or other objects with urine to attract male dogs.
5. Changes in appetite and behavior: Some dogs experience changes in appetite during heat, and may lose their appetite or become picky. Additionally, some dogs may become agitated, restless, or impulsive.
6. Making a nest: Before and after the estrus period, a female dog may look for a safe and comfortable place to prepare for giving birth or hatching, which is usually manifested as the behavior of making a nest.
It’s important to note that the duration and appearance of a dog’s estrus may vary based on individual, breed, and physiological differences. If you have experience raising a dog or have questions about your dog's health and behavior, it is recommended to consult a veterinarian for professional advice.
