Dog Heat Cycle Calculator ToolBy / Dog Heat Cycle Calculator Dog Heat Cycle Calculator Last Heat Start Date: Dog Age (in Years): Select Dog Breed: Default (6 Months Cycle) Chihuahua (4 Months Cycle) Labrador Retriever (8 Months Cycle) Bulldog (6 Months Cycle) Golden Retriever (7 Months Cycle) German Shepherd (8 Months Cycle) Cycle Length (Months): Calculate
