Stage 3 – Diestrus or MetOestrus
Diestrus is a non-fertile stage that usually lasts about two months. At this point at the latest bleeding will cease and the hormone levels will start to turn back to normal. During this process, which takes a while, many owners keep noticing persisting signs of heat in their female, such as the teats staying swollen for quite a while, for example. In some dogs it even takes the teats several months to shrink back to their normal size. And in rare cases they remain slightly enlarged for good. During the Diestrus stage the female will no longer be receptive to males or can even become slightly aggressive for some time towards males trying to mount her. This stage usually lasts about two months (average value).
BTF: “Steve, is the Diestrus of any importance to owners of pet dogs?”
Steve Gogulski: “It’s important for owners to understand the phase so visual signs within their female can be understood. It is not rare for some females to go through a “phantom” (false) pregnancy where their body and mind actually go through changes consistent with that of a pregnant bitch regardless if she was bred or not. The Diestrus is a phase that is impossible to detect without conducting estrus tests. However, upon tests resulting with the end of an ovulation 99.9% of breeders will no longer conduct estrus tests because the diestrus phase has no use or purpose for keeping tabs on in regard to breeding.”
BTF: “Steve, thank you very much for the insight!”