Do Female Dogs Howl When In Heat. Some dogs may appear sadder during heat, while others are constantly anxious or nervous. The length between cycles depends on her breed, size, and age, though on average a pooch will go through two cycles per calendar year.
Put methanol spray on the female dog’s tail to mask her smell. There's a relatively small window when your dog is most fertile during the heat cycle; Every female dog, without exemption, will have periods throughout its entire life.