Rethinking Spay/Neuter: Health Risks vs. Overpopulation

The article challenges the conventional wisdom surrounding early spaying and neutering in dogs, presenting scientific evidence that suggests significant health risks associated with the traditional procedures. While historically believed to prevent reproductive diseases and pet overpopulation, studies, particularly on large and giant breeds like Rottweilers and Golden Retrievers, indicate that removing sex organs and hormone production (desexing) may have adverse effects. Veterinarians like Dr. Patty Khuly and Dr. Clara Goh note that decisions are often based on habit rather than evidence.

Key risks for traditionally spayed or neutered dogs include an increased likelihood of obesity (affecting 56% of dogs in 2017), cranial cruciate ligament ruptures, hip dysplasia, various cancers, urinary incontinence, and cystitis. The article posits that intact dogs are more prone to maintaining healthy weights. It argues for separating the issue of pet health from pet overpopulation, citing Europe's success in managing dog populations without widespread desexing and experiencing lower canine obesity rates.

The piece advocates for alternative sterilization methods that prevent reproduction while preserving essential sex hormones. These include vasectomies for male dogs and tubal ligations or modified spays (hysterectomies) for females. These procedures remove the uterus but leave the hormone-producing ovaries intact, eliminating risks like pyometra. While U.S. veterinary schools primarily teach full spay/neuter, resources like the Parsemus Foundation list veterinarians offering hormone-sparing options. If full desexing is the only choice, it is recommended to wait until a dog reaches full musculoskeletal maturity, or after a female's first estrus cycle.

(Source: https://www.barkandwhiskers.com/2018-07-13-nl-obesity-and-sterilization-in-dogs/)