Do you know what a season is in dogs? 🐶 A season (or heat) is when a female dog is fertile and can become pregnant. During a season, it’s likely that your dog will behave differently, bleed from her vulva, and become very interested in male dogs. Most dogs have their first season when they’re about six months old, but this varies a lot and can be as late as two and a half years old. From then on, most dogs have a season every six to seven months. Being in season isn’t painful, but can make a do