Dogs can be neutered at any age, but the best time to neuter a dog depends on various factors, including the breed, size, and health status of the dog.

For most dogs, it is recommended to neuter them between 6 and 12 months of age. This is because dogs that are neutered before sexual maturity tend to have fewer health problems and behavioral issues in the long term, such as aggression, roaming, and marking.

However, for some large or giant breed dogs, it may be recommended to wait until they are closer to 2 years of age to reduce the risk of bone and joint problems.

It's always best to consult with your veterinarian to determine the best time to neuter your dog based on their individual needs and circumstances.