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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | spayed | 6 months and 13 days old | 16 lbs
When do I spay Bella? She hasn't Thad her first heat yet. Should I spay her before she has her first heat or after? I'm looking for an estimated date please.
5 Answers

Answered By Isabelle Roese, DVM, CVA
Veterinarian, Certified Veterinary Acupuncturist
Published on August 11th, 2017
Answered By Stephanie Echols, DVM
Veterinarian
Great question! Most vets recommend spaying before the first heat cycle which typically occurs around 6 months of age. It is possible she already went through her because sometimes you won't see the bleeding. If you haven't seen bleeding and her vulva isn't swollen, I would recommend having it done ASAP. If she goes through the heat cycle, you need to wait about 6 weeks to have the surgery. Every heat cycle she goes through, increases her risks of cancer as she gets older. I hope this answer helps. Kisses to Bella!
1Pet Parents found this answer helpful
Answered By Rebeccah Wood
Licensed Veterinary Technician, Registered Laboratory Animal Technologist
Published on July 30th, 2017
Most veterinarians recommend having your dog spayed at 6 months of age, as this is right before they go into their first heat cycle. A heat cycle is usually associated with increased hormone levels, as well as swelling and discharge at the vulva. This increase in hormones can predispose a dog to mammary tumors in the future, and the risk of conditions like pyometra (an infection in the uterus) are also increased. Spaying is a safe and permanent measure to prevent these issues from occurring. I hope this helps! :)
1Pet Parents found this answer helpful
Answered By Dr. Melanie, BVSc MS
Veterinarian
Published on January 22nd, 2019
I would have Mya spayed before her first heat cycle. If you wait until after her first heat cycle, you raise her chances of getting mammary tumors later in life from 0.8% to 8%. Plus you don't have to worry about her accidentally getting pregnant, and don't have to deal with a dog in heat. I'd have her spayed at six months of age. I hope this helps.
1Pet Parents found this answer helpful
Answered By Dr. Melanie, BVSc MS
Veterinarian
Published on December 29th, 2016
Great question! I personally recommend having Mila spayed around six months of age, which will be before she goes into her first heat. When a dog is spayed before their first heat, she will have a 0.8% chance of developing mammary tumors later in life. If she is spayed after her first heat, she will have an 8% chance of developing mammary tumors, and spaying her after her second (or subsequent heats) will give her a 25% chance of developing them.
1Pet Parents found this answer helpful