Understanding What Happens When a Dog is in Heat When it comes to the reproductive cycle of dogs, understanding the heat cycle is crucial for pet owners. This phase, known as estrus, is a natural part of a female dog’s life and signifies that she is ready to mate. The heat cycle can be both an exciting and challenging time for dog owners, given the behavioral changes and physical symptoms that accompany it. During this period, which typically occurs twice a year, a female dog undergoes various hormonal fluctuations that can affect her mood, appetite, and overall behavior. To the untrained eye, these changes might seem perplexing, but they are…