Are Cat Food Toppers Worth It?

A cat food topper is optional. A healthy cat eating a complete and balanced cat food already gets every nutrient it needs. A topper can still be worth it if it gets a choosy cat interested in the bowl.

The rule that matters most: keep toppers and other extras to about 10% of your cat's daily calories, so the main food still does the work of nourishing her.

Below: why cats respond to toppers the way they do, how much is too much, which toppers are safe, and how to add one without a standoff at dinner.

Does my cat actually need a food topper?

No, and that is good news. A food labeled complete and balanced is built to be your cat's whole diet. AAFCO defines "complete" as containing all the nutrients required, and "balanced" as having them in the correct ratios.

Look for that promise in the nutritional adequacy statement, the small print on the side or back of the bag or can. AAFCO calls it the key to meeting a pet's nutritional needs.

Most toppers carry different wording. AAFCO explains that products not intended to be complete feeds are considered treats or supplements, and they won't have a nutritional adequacy statement. Some say "for intermittent or supplemental feeding only."

WSAVA, the world veterinary association, is plain about extras on top of a commercial food: there is no need to add vitamin or mineral supplements, and doing so can be risky because some nutrients are toxic in high amounts.

So a topper is a choice you make for your cat's enjoyment, never a fix for a gap in a good food.

Why do cats go for toppers?

Here's a surprising fact. Cats can't taste sugar. A 2005 study in PLoS Genetics found that cats, unlike most mammals, do not prefer and may be unable to detect sweetness, because the gene for one half of the sweet receptor no longer works.

Their umami receptor is intact, though. A 2025 review in Chemical Senses describes a strong appetitive response in cats to certain amino acids and nucleotides, the savory building blocks found in meat and fish.

That is why meaty, fishy toppers tend to win, and why a sweet one does nothing for a cat.

Smell matters too. A 2024 review of pet food palatability in Animals notes that a cat's sense of smell is finely tuned to detect unfamiliar odors, which helps her judge whether food is fresh and safe.

That same sharp nose explains why some cats sniff a new topper and walk away. They are checking it first.

One more surprise. Dry food often already has a coating. The same review explains that fats and oils are predominantly coated onto kibble to maximize their appeal, often in layers with flavor enhancers called palatants.

Cornell's Feline Health Center adds a useful point about habits. Some cats become very selective about what they'll accept. Feeding two or three different cat foods gives flavor variety and may keep a cat from fixing on one food only.

How much topper is too much?

Less than you might think. Veterinary bodies put a ceiling on all extras combined, and a topper counts as an extra.

Source	Ceiling for treats and extras
AAHA, WSAVA, Merck Veterinary Manual	About 10% of daily calories
Cornell Feline Health Center	10–15% of daily calories
ASPCA	5% or less of daily food intake

The figures differ a little, so aim for the 10% that most sources share, and lower is fine. The 2021 AAHA nutrition guidelines explain the reason: unbalanced food calories above 10% of intake dilute essential nutrients and add excess calories.

Merck makes the same point. Most extras are not complete and balanced, so keeping them under 10% of calories protects the nutrition in the main food.

To put numbers on it: if your cat's daily food provides 200 calories, her toppers and any other extras together get about 20. That can be a surprisingly small spoonful.

Calories for the main food and most extras are printed on the label. AAHA adds that supplements can be a significant source of calories too, and that the maker can tell you the figure when it isn't listed.

Should I cut back her regular food?

If toppers become a daily habit, ask your vet whether to trim the main portion slightly. WSAVA notes that a cat's real needs can vary up to 50% above or below the label's starting amount, so her body shape is the true guide.

WSAVA uses a 9-point body condition score, with 4 to 5 out of 9 considered ideal. Your vet can show you how to check it at home with your hands.

What makes a safe cat food topper?

A good topper is made for cats, simple, and fed in small amounts. Cats are obligate carnivores, Cornell notes, relying on nutrients found only in animal products, so meat and fish are the natural fit.

The simplest topper is food she already eats. A spoonful of a complete wet cat food on top of dry food adds moisture. Cornell notes canned food is at least 75% water, compared with 6 to 10% in dry food.

For more ways to get water into her day, our guide on how to get a cat to drink more water covers bowls, fountains and wet food.

A lickable topper made for cats is another option. Choolip's Total Balance is one example: a daily lickable stick made with tuna, cod, salmon and lobster, which provides vitamins A, B2, B3 and E, iron, zinc and a postbiotic.

It is a food supplement, not a complete diet, so it counts toward the 10% and a cat on complete food doesn't need it. Squeeze a little over her usual meal and see what she thinks.

What should never go on her food?

• Onion, garlic and chives. The ASPCA warns these can irritate the gut and damage red blood cells.
• Salty foods. The ASPCA notes excess salt can cause increased thirst and urination.
• Milk. The ASPCA says pets lack significant amounts of lactase, so milk and dairy can bring on digestive upset.
• Raw meat or raw eggs. The ASPCA notes they can carry Salmonella and E. coli.
• Table scraps in general. Merck's advice for cat owners is simply to avoid them.

If you do use a raw topper, the FDA, which does not recommend raw pet food, advises washing your hands with soap for at least 20 seconds after handling it, and refrigerating or discarding whatever your cat leaves.

How do I add a topper to a picky cat's bowl?

Go slowly. A cat that distrusts unfamiliar smells needs time, and a small first taste is less likely to put her off the whole meal.

1. Start with a tiny amount on one edge of the bowl, so the rest of her usual food stays as she knows it.
2. If she refuses mixed food, offer the topper beside the bowl instead. WSAVA's advice on switching diets notes that many cats refuse foods mixed together.
3. Serve wet toppers fresh. Pick up what's left after the meal rather than leaving it out for hours.
4. Keep track of every extra she gets in a day, so the total stays near 10%.

If you share your home with a dog too, the two need different toppers. Our guide to the dog food topper covers the canine side.

For a broader look at why some owners add extras to dry food at all, see our article on kibble toppers.

Call your vet promptly if your cat:

• refuses to eat for more than a day. Merck advises taking her to the vet right away, and Cornell warns a cat that refuses food can develop serious medical problems
• will only eat when a topper is added, or keeps eating less
• is losing weight, or gaining it, without a change in her food
• has eaten onion, garlic or chives

Questions new cat parents ask

Are cat food toppers healthy?

They can be part of a healthy routine when they're made for cats and kept to about 10% of daily calories. A cat on a complete and balanced food doesn't need one.

Can I put a topper on dry cat food every day?

Yes, if the amount fits within her daily calories. Count it with any other extras, and ask your vet whether to trim her main portion.

What is the best topper for a picky cat?

Something meaty or fishy and made for cats. Cats can't taste sweetness, and their umami receptor responds to the amino acids in meat and fish.

Can I use human food as a cat food topper?

Plain, cooked, unseasoned meat or fish in small amounts is the safest kind. Avoid onion, garlic, salty foods, milk and raw meat, and skip table scraps altogether.

Sources

• AAFCO: Selecting the Right Pet Food
• WSAVA Global Nutrition Committee: Frequently Asked Questions and Myths
• Cline MG et al. 2021 AAHA Nutrition and Weight Management Guidelines for Dogs and Cats
• Cornell Feline Health Center: Feeding Your Cat
• Merck Veterinary Manual: Proper Nutrition for Cats
• Merck Veterinary Manual: Feeding Practices in Small Animals
• ASPCA: Cat Nutrition Tips
• ASPCA: People Foods to Avoid Feeding Your Pets
• FDA Center for Veterinary Medicine: Get the Facts! Raw Pet Food Diets Can Be Dangerous to You and Your Pet
• Li X et al. Pseudogenization of a Sweet-Receptor Gene Accounts for Cats' Indifference toward Sugar. PLoS Genetics, 2005
• Jiang P, Beauchamp GK. Taste receptors and their ecological niches: cats, dogs, and other vertebrates. Chemical Senses, 2025
• Le Guillas G et al. Insights to Study, Understand and Manage Extruded Dry Pet Food Palatability. Animals, 2024

This article is for general information and is not veterinary advice. Talk to your vet about your own cat — they know the animal in front of them.