Taurine in cat food: the nutrient every complete cat food must contain, and why
Taurine in cat food is easy to overlook. If you have looked at the additives line on a bag of cat food you will have seen taurine listed, usually somewhere after the vitamins. It is easy to skim past. It is also the single most important reason cats cannot live on dog food, and a nutrient whose absence can be fatal.
What taurine does
Taurine is an amino acid that keeps the heart muscle contracting properly, maintains the retina, supports digestion through bile salts and plays a role in reproduction and immunity. Dogs and humans make their own from other amino acids. Cats cannot make enough, so it has to come from food, every day, for life.
What happens without it
The two classic taurine-deficiency diseases are dilated cardiomyopathy, where the heart enlarges and weakens, and central retinal degeneration, which causes irreversible blindness. Both were common in the 1980s until the link was proven and manufacturers began adding taurine to every complete food. Deficiency still appears today in cats fed dog food, home-cooked diets or vegetarian recipes without supplementation.
Where taurine comes from
Taurine occurs naturally in animal tissue, especially heart, liver and seafood, and hardly at all in plants. Cooking destroys part of it, which is why a complete food adds a measured amount on top of what the meat provides. In Bitesy Essentials Cat wet food every 405g can is fortified with 250 mg of taurine per kilogram alongside vitamins A, D3 and E; Bitesy Essentials Cat dry recipes are supplemented the same way.
How to read the label
Look for taurine in the nutritional additives, expressed per kilogram. Then look for the word complete on the front: a complementary food such as a treat or a topper is not required to contain enough taurine on its own. If you feed a mix of foods, make sure the bulk of the diet is a complete recipe.
Kittens, seniors and sterilised cats
Growing kittens and pregnant queens have the highest taurine needs, which is why kitten recipes are formulated separately. Older cats and cats with heart conditions benefit from a reliable daily supply. Sterilised cats have no special taurine requirement, but they do gain weight easily, so a recipe such as our salmon for sterilised cats pairs taurine with L-carnitine to support a healthy weight.
Frequently asked
Can I give my cat a taurine supplement?
If the cat eats a complete food, no supplement is needed and excess is simply excreted. Supplements are for home-prepared diets, under veterinary guidance.
Does dry food contain enough taurine?
A complete dry food does. The risk is with dog food, treats-only diets and home cooking, not with the dry-versus-wet choice.
How much taurine does a cat need?
European guidelines set minimums of roughly 1,000 mg/kg in dry food and 2,000 mg/kg in wet food on a dry-matter basis; complete foods are formulated to meet them.
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