For dogs that aren't spayed, when do they stop having heat cycles? Is there such a thing as canine menopause? These are common questions, and in short the answer is no, dogs do not stop having heat cycles. There are other health concerns to be aware of as well, for dogs who are intact (not spayed).
Learn more about canine reproduction and potential problems for middle age to senior female dogs in this FAQ: Do Dogs Go Through Menopause?
Photo: Close Up / inajeep on Flickr