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..
Spaying prior to the first heat cycle drastically reduces the chances of mammary tumors and cancer (breast cancer). Each heat cycle your dog goes though reduces this benefit until the dog has had 3 heat cycles. After this time the chances of mammary tumors is the same as if she isn't spayed. The older a dog is when they are spayed the less likely they will develop hormonal responsive incontinence as they get older. Or the less likely they will be to drip urine because they don't have enough estrogen in their system. For smaller breeds (Chihuahua, toy poodle, etc...) the sweet spot of old enough but.