Female dogs go through a reproductive cycle known as a "heat" which normally occurs every 7 to 8 months. During this period, she can become pregnant, so stopping a female's heat cycle is important in controlling the unwanted pet population. A dog in heat generally urinates more and her behaviour becomes nervous, alert and easily distracted. An emergency mid-heat spay is essential for your dog's health if she becomes very ill due to the cycle itself. If you are planning to responsibly breed your dog but need to skip her heat cycle temporarily for competition or conformation showing, there are medications available through your vet to suppress the cycle. All methods of stopping a heat require a veterinarian whether the choice is surgery or medication-based.
Prevent the heat cycle completely by having your dog spayed by a veterinarian before or between her cycles. This stops her from going into heat by removing the reproductive organs.
Have your dog spayed by a surgical specialist during her heat cycle if her health is at risk. This is considered an emergency surgery, but it stops her heat cycle from progressing, even if she had already started.
Obtain specialised medication from your vet to temporarily suppress your dog's heat cycle. There are currently several drugs available as reversible canine contraception. Follow your vet's instructions and advice for these medications, which can have strong side effects.