"Isn't it too early?" — one of the most common questions about spaying and neutering. The answer depends on the animal's species, size, and situation. We've gathered what veterinary organizations around the world recommend.
The general rule
The classic, most common practice is spaying or neutering at around 6 months, before or right at the start of sexual maturity. For females, the key point is: having the procedure done before the first heat significantly lowers the risk of breast tumors later on.
Cats
The international trend in recent years is to spay or neuter earlier than 6 months. In the US and Europe, the "Fix by Five" campaign is widespread (spay or neuter by 5 months): kittens mature early, and a female kitten can get pregnant as early as 4–5 months. So the optimal time is around 4 months, before unwanted breeding starts.
Dogs: size matters here
- Small and medium breeds — usually standard timing, around 6 months.
- Large and giant breeds — recent research (including studies from the US on golden retrievers and others) has shown that spaying or neutering too early can increase the risk of certain orthopedic problems (joints, ligaments) and some diseases. That's why for large dogs, veterinarians increasingly recommend waiting until growth plates close — roughly 12–18 months. Your vet will determine the exact timing for your individual dog.
Why refuges and spay-neuter programs do this early
In worldwide refuge practice, early (pediatric) spaying and neutering — from around 8 weeks / 2 months is common, as soon as the animal reaches a safe weight (usually from ~1 kg). The reason is simple: the animal goes to its new family already spayed or neutered — and you're guaranteed there won't be unwanted litters. Research shows that with proper anesthesia and technique, early spaying and neutering is safe, and young animals even recover faster.
The same goes for TNR (trap-neuter-return) programs for strays: they spay or neuter everyone they can, regardless of the "ideal" age — because every unspayed or unneutered animal on the street means dozens more within a few years.
So when should I spay or neuter my animal?
Here's a rough guide:
- female cat/male cat — around 4 months (no later than the first heat);
- small dog — around 6 months;
- large dog — discuss with your vet, possibly closer to a year;
- female of any species — if possible, before the first heat.
But these are guidelines, not strict rules. The best decision is always made by your veterinarian after examining your individual animal. If you've adopted a pet from us or are planning to — get in touch, and we'll suggest the right timing and, if needed, recommend a trusted vet.