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..
In most cases, your dog's body shouldn't go into heat for a few months after pregnancy, but individuals can have irregular cycles. The fact is, how long after pregnancy a dog has her next period, or goes into estrus or heat, varies widely. Most female dogs experience a first heat cycle at the age of 6 months. Unless spayed or pregnant, they'll go into heat every six months for the rest of their lives.