According to the American Kennel Club's Canine Health Foundation, large-breed dogs like Labradors should be spayed or neutered after puberty. This is typically when he or she is more than 45 pounds and between 9 to 15 months old.

When should you have your female dog 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.

DO Labs calm down after being spayed?

They may have a slight decrease in appetite and may be tender around the surgery site. ... We expect normal, age-appropriate, behavioral development for dogs after spay or neuter surgery. This means that some dogs will “calm down” over the next few months, while others may take years to calm down.