Yes, dogs do leak blood when they are in heat, which is similar to a period. Bloody vaginal discharge is often the first sign owners notice when their dog enters estrus (heat).
Understanding Canine Estrus and Blood
When a female dog goes into heat (estrus), her body undergoes hormonal changes that prepare her for potential pregnancy. This process includes changes in the vaginal lining, which can result in bleeding.
- First Sign: According to reference material, bloody vaginal discharge is frequently the first sign that an owner notices when their dog comes into heat.
- Timing: This discharge may not be apparent until several days after the estrus cycle has begun.
- Amount Varies: The amount of discharge varies from dog to dog.
Therefore, the "period blood" you observe is indeed a sign that your dog is in the estrus cycle and is experiencing hormonal changes associated with it.