How long does a dogs heat last?

Non-spayed female dogs will normally go into "heat" or estrus twice a year. The age at which their cycles start and the duration of the cycle vary greatly between the breeds of dogs and individual dogs. If you are planning to breed your dog then you'll need to learn their estrus cycle in order to make the most use of your breeding time. read more

If you don't want your dog to breed, you need to keep close tabs on it during this stage to ensure it doesn't seek out or attract a mate. Diestrus (Third Stage) During the diestrus stage, which typically lasts six to 10 weeks, your dog shows few outward signs of the cycle. read more