Cat food without grain
Grain-free cat food simply means a recipe made without wheat, maize, rice or other cereal grains, using a different carbohydrate source — often potato, peas or tapioca — instead. It is not the same as low-carbohydrate or grain-allergy food, and for most cats it is a preference rather than a medical necessity.
What "grain-free" actually means on a label
A grain-free recipe replaces cereal grains with an alternative carbohydrate or with a higher proportion of meat, but it is not automatically lower in carbohydrate overall, since something still has to bind and structure a dry kibble. Reading the ingredients list rather than the front-of-pack claim is the only reliable way to know what a specific recipe actually contains.
Genuine grain allergy is uncommon in cats — when cats do react to a food, it is more often a specific protein, such as beef or fish, that is the trigger rather than the grain itself. Grain-free is worth choosing for a cat who has been shown to react to grain specifically, or simply as a preference, rather than being assumed as the fix for a sensitive stomach in general.
Why owners choose it anyway
Some owners prefer a grain-free diet because it more closely resembles what a cat, as an obligate carnivore, would naturally eat — mostly meat, with little plant-based carbohydrate. Others have simply found a particular grain-free recipe agrees well with their cat's digestion, without that meaning grain itself was ever the problem.
Whatever the reason, a genuinely complete grain-free food is a perfectly reasonable choice, provided it is a complete cat food rather than a treat or topper being fed as a whole diet. We carry a selection of grain-free wet and dry recipes, including options across kitten, adult and senior life stages.
How to introduce a new food safely
Switch gradually over a week or so, mixing increasing amounts of the new food into the old rather than swapping overnight, since a sudden change is more likely to upset a cat's stomach than the recipe itself. Watch stools and appetite during the change, and slow the transition down if either looks off.
If your cat has a diagnosed food sensitivity or a health condition affecting diet, check any new food with your vet before switching, rather than choosing on the grain-free label alone.
Without it, and in stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
Whiskas 1+ Salmon Adult Dry Cat Food
Complete salmon dry food for adult cats in a practical 1.9KG bag
£12.39
Whiskas 1+ Lamb Adult Dry Cat Food
Complete lamb dry food for adult cats in a practical 1.9KG bag
£12.39
Whiskas 1 Tuna Adult Dry Cat Food
Complete tuna dry food for adult cats, offered in several bag sizes
From£3.19
Whiskas Kitten Chicken Dry Cat Food
Complete chicken dry food for kittens, available in several bag sizes
From£3.19
Whiskas 1 Chicken Adult Dry Cat Food
A complete dry food for cats 1+, with chicken present only in the brown kibbles
From£3.19
Whiskas 7+ Senior Cat Complete Dry with Chicken
Complete chicken dry food for senior cats aged 7+ in a 1.9KG bag
£12.39
Whiskas 7+ Chicken Adult Dry Cat Food
Complete chicken dry food for senior cats aged 7+ in an 800G bag
£6.09
Whiskas 2-12 Months Kitten Complete Dry Food Chicken
Complete chicken dry food for kittens aged 2-12 months in a 7KG bag
£30.15
Whiskas 1+ Adult Cat Complete Dry Food Tuna
Complete tuna dry cat food for adults in a 7KG bag with 30% protein
£30.15
Whiskas 1+ Adult Cat Complete Dry with Chicken
Complete chicken dry cat food for adults in a 7KG bag with 30% protein
£30.15
Burns Adult/Senior Cat Sensitive Grain Free Duck & Potato
Grain-free duck and potato food for cats with digestive or food sensitivities
£16.49
James Wellbeloved Light Adult Dry Cat Food Fish
A lower-calorie fish dry food for adult cats managing their weight, with joint-support ingredients
£24.65
Common questions
- Is grain-free cat food better than food with grain?
- Not inherently — it suits some cats and makes no difference to others. Genuine grain allergy is uncommon in cats, so grain-free is a reasonable choice if your cat has shown a specific sensitivity or you simply prefer it, rather than something every cat needs.
- What do grain-free cat foods use instead of grain?
- Common substitutes include potato, peas, tapioca and sweet potato, which provide the carbohydrate and binding a kibble needs without using wheat, maize or rice. Check the ingredients list on the specific product to see what it actually contains.
- Can grain-free food help a cat with a sensitive stomach?
- It might, if grain specifically turns out to be the trigger, but a sensitive stomach in cats is more often linked to a particular protein or a sudden food change than to grain itself. If your cat has ongoing digestive issues, it is worth discussing with your vet before choosing a food by label alone.
- Is grain-free food suitable for kittens?
- Yes, provided it is specifically formulated as a complete kitten food for growth, the same requirement that applies to any kitten diet. Check the packaging states it is complete and suitable for kittens rather than assuming any grain-free adult food will do.
Related
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.