WebMD Health News. March 30, 2000 (Atlanta) -- As many as 44% of the people in the U.S. who have epilepsy -- more than 1 million people -- continue to have seizures, despite getting medical treatment, according to a report in the March issue of the journal Epilepsia.
First, some female dog and cat anatomy and the spay surgical procedure must be discussed first to understand how a pet can seem to be in heat after a surgery to prevent pregnancy and heat cycles. In the dog and cat, the uterus is shaped like a very long Y..
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. If you do not intend to breed your dog it's important to consider spaying her.