- Category: Health & Safety
- Published: Wednesday, 27 December 2017 06:12
Mairin Miller, DVM.
Practice Limited to Oncology
Veterinary Specialty Hospital – North County
80-95% of mammary tumors in the cat are malignant. While older cats and the Siamese breed are more likely to develop mammary tumors, the most influential factor for the development of mammary cancer in cats is exposure to ovarian hormones. Cats spayed before 6 months of age have a 91% decreased risk and cats spayed prior to 1 year of age have an 86% decreased risk of developing mammary tumors compared to intact female cats.