Taurine

Why cats need dietary taurine, how dogs differ, and what a Golden Retriever study can tell us about taurine, diet and heart disease.

Ingredient & nutrient profile

Taurine

Essential in a cat’s diet, with a different nutritional context in dogs. A taurine listing is useful information, but it cannot tell you whether the whole food is suitable.

AdditiveDogCat
T
TaurineNutritional role • Research • Practical context
SpeciesDogs and cats
ScopeIngredient and nutrient context
AssessmentInitial evidence summary
Sources checked23 September 2026
Nutritional role

What it contributes

Taurine is an amino sulfonic acid. Cats cannot make enough to meet their needs, so an adequate dietary supply is essential. Deficiency can damage the retina and heart. Dogs usually make taurine from other dietary amino acids, although low taurine status can occur in some circumstances. [1, 2]

Species and formulation

Read it in context

For cats, assess whether the complete diet supplies adequate taurine, rather than whether meat appears prominently in the ingredient list. Processing and the overall formulation affect taurine availability. For dogs, the Golden Retriever study below concerns animals with taurine deficiency and heart disease; it does not establish that all dogs need an extra supplement.

Research

What the evidence shows

Kaplan and colleagues studied Golden Retrievers with taurine deficiency and dilated cardiomyopathy. Improvement following diet changes, supplementation and clinical care cannot isolate the effect of taurine alone. This observational study does not prove that one ingredient caused disease. [3]

Limits and safety

Before changing the diet

Suspected taurine deficiency or heart disease needs veterinary assessment. Adding taurine yourself is not a substitute for checking the diet or investigating symptoms, and it does not establish that a food is nutritionally complete.

Food labels

Questions worth asking

Ask whether the food is complete for your pet’s species and life stage, how taurine adequacy is assessed, and whether the figures supplied describe the finished food. Raw, cooked and dry foods all need appropriate formulation.

Connected evidence

Explore the study

Study links follow your species selection. A shared nutrient profile may discuss more than one species.

Sources

References and review scope

  1. FEDIAF 2025 nutritional guidelines, section 7.3
  2. FDA investigation: taurine and canine dilated cardiomyopathy (historical investigation summary)
  3. Kaplan et al. (2018), original study

This is an initial, source-linked overview, not a systematic review or a product endorsement. FEDIAF is the European pet-food industry federation; its guidelines provide formulation context rather than an independent clinical trial. Study-specific access limitations are stated above.

Product profiles with related ingredient context

These links show how to read a food declaration alongside this ingredient profile. They are not evidence that a product delivers the results of an ingredient study.