For cats: 4-5 months of age
Small breed dogs: 5-6 months of age
Large breed dogs: over 9 months of age.
However, Bay Animal Clinic recommends that the age of spay or neuter should be tailored each pet's specific needs. We encourage our clients to please call and consult with one of our doctors or licensed veterinary technicians in regard to the appropriate age to spay or neuter their pet.