Kittens can be spayed or neutered as young as six to eight weeks of age, which is known as early or pediatric spay/neuter. However, standard spay and neuter procedures are most often conducted at about five to six months of age. Although these procedures can be performed at any time during a cats life as long as they are healthy. It is recommended to have your kitten spayed or neutered before puberty or their first heat cycle to avoid accidental pregnancy or certain health conditions. Its always best to talk to your veterinarian so they can inform you when the best time is to have your kitten spayed or neutered. The optimal age to spay/neuter a cat is before it reaches 5 months of age.