When does a Doberman stop growing?

Dobermans reach their full height by 12 months of age, but they may continue to fill out and develop muscle mass until they are about 18 to 24 months old. While they may reach their adult size relatively early, their growth and development, both physically and mentally, continue during this period. Proper nutrition and exercise during their growth phase are crucial to ensure they develop into healthy and well-proportioned adults.