Anestrus in dogs. Stage 4: Anestrus The anestrus stage is the final stage of the estrous cycle and can last anywhere from 1-6 months. The end of anestrus is marked by an increase in luteinizing hormone and follicle stimulating hormone. A female dog in this phase is not attractive to male dogs and will not allow them to mount. Aug 16, 2024 · Anestrus is the phase in the canine estrous cycle that follows diestrus and precedes proestrus. The estrous cycle consists of four distinct stages. This phase can last several months, depending on the breed and individual dog. By using the right products and taking proper care, dog owners can help keep their dog comfortable and healthy during her heat cycle, while also protecting their home and furnishings from staining. What most people refer to as “coming into heat” or “coming into season” refers to the stages called proestrus and estrus. Anestrus is characterized by low progesterone and low estrogen. A.