How Long After Neutering Does a Male Cat’s Hormones Drop?

After a male cat is neutered, hormones generally start dropping 2 weeks later, but full clearance and stabilization take about 3 months. So for 3 months after surgery he may still show heat behaviors like inappropriate urination, irritability, and mounting, which is normal and greatly reduces after 3 months. The owner should carefully tend the surgical wound per the vet’s instructions to prevent infection.