Dogs are typically considered fully grown when they reach physical maturity, which is usually around 1 year of age for small and medium breeds, and can be up to 2 years for large and giant breeds
. However, the exact age at which a dog is fully grown can vary depending on the breed and individual characteristics. Some sources suggest that dogs stop growing between 6 and 24 months of age, depending on their breed size
. It's important to monitor a dog's development and consult a veterinarian for specific guidance, especially for large or giant breeds.