Does dry food clean teeth?

Barely — kibble crumbles before it scrapes much plaque. Here is the reasoning behind that answer, and the exceptions worth knowing.

The short answer

Barely — kibble crumbles before it scrapes much plaque.

Only specifically designed dental kibble with a fibrous matrix has evidence behind it. Brushing remains the gold standard; dry food alone does not prevent periodontal disease.

Why it works that way

Feeding decisions compound: a 10% overshoot becomes 2–3 kg a year, and joint disease follows weight rather than age. That is why portion control and body condition scoring outrank brand loyalty in every credible feeding guideline.

• Weigh food rather than scooping by eye for at least two weeks.
• Score body condition monthly using ribs, waist and belly tuck.
• Change one variable at a time so you can tell what worked.

When to ask your vet instead

See a vet rather than adjusting diet if you notice weight loss without diet change, persistent loose stools, vomiting, or a sudden refusal to eat. Those are clinical signs, not feeding problems.

Adjust slowly, measure consistently, and let body condition be the referee.