INGREDIENT
Methionine
An essential sulfur-containing amino acid.
Why it turns up in dog food
- Often the limiting amino acid in plant-heavy recipes. It builds coat keratin and helps keep urine acidic.
An ingredient on its own tells you very little.
What matters is how much of it there is and where it sits in the list. That is why we weigh
the top five rather than reacting to any single name further down.
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