Lowest fat cat food
There is no single "lowest fat" cat food, since fat content varies continuously across the market rather than sitting in a fixed low or high category. What matters is comparing the actual percentage on the label between the foods you are considering, and understanding why a lower fat content might genuinely suit your cat.
What the fat percentage on the label tells you
Crude fat is listed in the analytical constituents on a cat food label as a percentage, and it varies noticeably between recipes and between wet and dry food, with dry food often reading higher on paper simply because it contains far less water than wet food. Comparing fat content between a wet and a dry food directly, without accounting for that, is not a fair comparison.
There is no legal or universal threshold that makes a food officially "low fat," so a front-of-pack claim is worth checking against the actual percentage rather than trusting the wording alone. Two products both marketed as lower fat can still differ meaningfully once you compare the figures.
Why some owners look for a lower fat food
A vet may recommend a lower-fat diet for a cat with a specific diagnosed condition, such as pancreatitis or certain digestive issues, as part of a wider managed diet. If your cat has been recommended a lower-fat diet for a diagnosed condition, that recommendation should come with specific guidance on what level is appropriate, rather than choosing the lowest number you can find.
For a healthy cat carrying extra weight, a lower-calorie food is usually the more relevant thing to look for than fat content specifically, since weight management is about overall calories rather than fat percentage alone — a food can be moderate in fat and still support healthy weight if the overall calorie content is right.
How to actually compare foods
Check the fat percentage in the analytical constituents on the back of the pack, and compare like with like — wet against wet, dry against dry — rather than across formats, since the water content skews a direct percentage comparison between them.
If your cat has a specific health reason for needing a lower-fat diet, your vet may recommend a prescription diet formulated and tested for that condition specifically, which is a different thing to a shelf food that simply happens to read lower on fat.
What we stock
Our wet and dry cat food range spans a range of fat levels, and checking the specific product's label will tell you more than a general search for "lowest fat" ever could, since the figures genuinely vary product to product.
If your cat is on a vet-recommended low-fat diet for a diagnosed condition, that is worth discussing directly with your vet or their practice, since it may point toward a prescription diet rather than an everyday shelf food.
Our picks, and why
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
- Does my cat need a low fat diet?
- Not unless a vet has recommended one for a specific diagnosed condition, such as pancreatitis. A healthy cat with no such diagnosis does not generally need to seek out the lowest-fat food available, and overall calorie content usually matters more for weight management than fat percentage alone.
- Is dry or wet cat food lower in fat?
- It depends on the specific product, but comparing the two directly by their percentage figures can be misleading, since dry food contains far less water than wet food and can read higher on fat as a result. Compare products within the same format rather than across wet and dry.
- Can a low fat diet help an overweight cat?
- It can be part of a plan, but overall calorie content matters more for weight management than fat percentage specifically. A vet can advise on an appropriate feeding plan for an overweight cat rather than choosing a food based on the lowest fat figure alone.
- What is a normal fat percentage in cat food?
- There is no single official figure, since it varies by recipe, format and life stage. Comparing the percentage on the analytical constituents between the specific foods you are considering is more useful than looking for a universal "normal" number to aim for.
Related
Sources
Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
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.