At what age is a dog considered a senior for grooming purposes?

The answer varies by breed and size. Larger breeds tend to age faster — a Great Dane may be considered senior at 6 or 7, while a small terrier might not reach true senior status until 10 or 11. As a general guide, most medium-to-large dogs transition into senior status between 7 and 9 years of age. If your dog has begun showing signs of reduced mobility, stiffness, or changes in coat and skin condition, it is worth discussing a senior grooming approach with your groomer regardless of their chronological age.