Taurine in pet food — what it is and how it scores

What it is

Taurine is an amino acid essential for heart and eye function. Cats cannot synthesize enough of it and must get it from food; deficiency causes dilated cardiomyopathy and retinal degeneration. Supplemental taurine has been standard in cat food since the link was established.

Why it's in pet food

Meat contains taurine naturally, but processing reduces it — so responsible cat formulas add it back explicitly, either in the ingredient list or as a guaranteed minimum on the analysis.

How Bowlmark scores it

Scores are deterministic math over the printed label — the rules below apply to every product identically, and nothing estimates or fills in a blank.

For cat food, the nutrient pillar applies a critical 30-point deduction when taurine appears neither in the ingredient list nor as a guarantee on the analysis — and, like every critical flag, it also caps the product's Universal Score. Dog food carries no taurine rule in the engine.

For dogs

Dogs normally synthesize their own taurine. Taurine status in dogs eating certain grain-free diets is part of the FDA's open DCM inquiry — a conversation for your vet, not a scoring rule.

For cats

Essential. A cat food with no taurine anywhere on its label is missing the one supplement everyone agrees on — treat that as a real signal about the formula.

Read the full methodology

Common questions

Answers come from this entry and the scoring rules above — reviewed before publish, like everything else on this page. For anything about your own pet, your vet knows best.

Why do cats need taurine in their food?

Taurine is an amino acid essential for heart and eye function, and cats cannot synthesize enough of it themselves — deficiency causes dilated cardiomyopathy and retinal degeneration. Meat contains taurine naturally, but processing reduces it, so responsible cat formulas add it back explicitly.

What does it mean if a cat food doesn't list taurine?

It is a real signal about the formula: a cat food with no taurine anywhere on its label is missing the one supplement everyone agrees on. Bowlmark treats it as critical — a 30-point deduction on the nutrient pillar when taurine appears neither in the ingredient list nor as a guarantee on the analysis, plus a cap on the product's Universal Score.

Do dogs need taurine added to their food?

Dogs normally synthesize their own taurine, so dog food carries no taurine rule in the engine. Taurine status in dogs eating certain grain-free diets is part of the FDA's open DCM inquiry — a conversation for your vet, not a scoring rule.

Foods that list taurine

Ranked by score where scores exist. Placement here is never sold.

Compare foods that list taurine

Same species, same form, both scored — closest scores first, so the comparison is a real one.

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Sources

Cite this page

Bowlmark. "Taurine in pet food — what it is and how it scores." https://www.bowlmark.com/ingredient/taurine

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Verified: Last verified August 21, 2026

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