Most female dogs can be spayed any time after eight weeks of age, and preferably before their first heat for the best health benefits. The first heat cycle occurs somewhere around six to seven months of age, depending on the breed. ... Size only affects the optimum time to spay and may make things easier for the vet.

What age should a dog be spayed?

When should I spay my female dog? We recommend waiting until your dog is at least over 6 months and likely even older for larger dogs. The benefits are much more pronounced in larger dogs, but there is not a lot of difference for lap dogs.

How much does it cost to spay a female dog?

While there are a lot of variables, spaying will typically run $50–$500. Costs at the low end of that spectrum are typically subsidized through a public agency. “There are many low-cost spay and neuter clinics around the country to help make the process more accessible to all pet owners,” Moore says.