Females who are spayed have a decreased risk of mammary cancer. If spayed before the first heat (usually around 5-6 months of age), the risk is nearly 0%! On the other hand, 25% of dogs spayed after the second heat cycle will get mammary cancer at some point in their lives. Did you know that 90% of cat mammary tumors are cancerous, and 50% of dog mammary tumors are cancerous? There aren’t too many things in life you can prevent so easily!
For females, another life threatening illness that you can easily prevent by spaying is pyometra. Pyometra is a bacterial infection in the uterus, typically occurring shortly after a heat cycle. Treatment is spaying, but this is not your typical spay…this involves IV fluids, antibiotics, bloodwork, and hospitalization. Major money, and still there’s risk of death due to massive infection or kidney failure.