By the WahLiao desk · Last verified 28 September 2026
Supermarket pet food is convenient and often good value for mainstream brands in small and medium bags, and some chains carry their own labels. Pet shops and online stores usually win on range, large bags and specialist diets. To compare fairly, work out the price per kilo for the same type of food, and check the label says the food is “complete”, meaning it is designed to be your pet’s whole diet, rather than a treat or topper. If your pet has a health condition, is very young or very old, or you plan to change its diet, ask your vet first.
The cheapest bag is not the one with the lowest price. It is the one your pet will eat, that suits it, and that you finish before it goes stale.
Pet food: quick facts
| How to compare | Price per kilo, for the same type and life stage |
| “Complete” food | Designed to be the whole diet |
| “Complementary” food | Treats and toppers, not a full diet on their own |
| Supermarkets | Mainstream brands, smaller bags, sometimes house brands |
| Pet shops and online | Wider range, larger bags, specialist diets |
| Changing food | Do it gradually, and ask your vet about any health or diet concern |
The WahLiao Verdict
| Cost | Varies widely by brand, type and bag size; compare per kilo. |
| What you get | From supermarkets, convenience; from pet shops and online, range and bulk prices. |
| The alternative | A standing online order for the large bag your pet already eats. |
| Worth it for | Anyone buying pet food as part of the weekly shop. |
| Skip it if | Your pet is on a prescription or special diet. Buy what your vet recommends. |
| Last verified | 28 September 2026. This page gives general shopping guidance, not veterinary advice. |
Supermarket or pet shop?
Supermarkets suit owners whose pets eat mainstream brands, who buy smaller bags, or who want to add pet food to the weekly shop. Some chains carry their own labels at lower prices.
Pet shops and online stores carry a much wider range, including larger bags, grain-free and specialist formulas, and brands supermarkets do not stock. Large bags usually cost less per kilo, and many online stores deliver.
Your vet is the place for prescription and therapeutic diets, which are formulated for specific health conditions and should be used under veterinary advice.
How to compare pet food prices
- Divide the price by the weight to get the price per kilo.
- Compare like with like: dry with dry, wet with wet, and the same life stage, such as puppy, adult or senior.
- Account for feeding amounts. A denser food may need smaller portions, so check the feeding guide on the pack; the cost per day matters more than the cost per bag.
- Watch bag size against freshness. A large bag is cheaper per kilo only if you finish it while fresh; reseal it and keep it cool and dry.
How to read a pet food label
- “Complete” means the food is designed to provide all your pet needs as its whole diet.
- “Complementary” means treats, toppers and supplements, not a full diet on their own.
- Life stage tells you whether the food is for puppies or kittens, adults or seniors.
- Ingredients are listed in descending order by weight, as for human food.
- The feeding guide gives daily amounts by weight; use it to work out the true cost per day.
Changing your pet’s food
Changing food suddenly can upset a pet’s stomach. Switch gradually by mixing the new food with the old over several days, and watch how your pet responds. If your pet has a health condition, allergies, or is very young or old, ask your vet before switching, even to save money.
Ways to spend less on pet food
- Buy the largest bag you will finish while fresh.
- Try a supermarket house brand of complete food, if it suits your pet.
- Set up a standing online order for the food your pet already eats, clearing any free-delivery threshold.
- Keep treats as treats. They often cost more per kilo than the main food.
Frequently asked questions
Is supermarket pet food good enough?
Mainstream complete foods sold in supermarkets can suit many pets. The right food depends on your pet’s age, size and health; ask your vet if unsure.
Is pet food cheaper at supermarkets or pet shops?
It depends on the brand and bag size. Supermarkets can be good value for mainstream brands in smaller bags; pet shops and online stores often cost less per kilo for large bags.
What does “complete” mean on pet food?
That the food is designed to provide everything your pet needs as its whole diet, as opposed to complementary treats or toppers.
How do I switch my pet’s food?
Gradually, mixing the new food with the old over several days. Ask your vet first if your pet has any health condition.
How should I store pet food?
Reseal the bag or use an airtight container, and keep it cool and dry.
Read next
This page belongs to How Supermarket Works, our series on the grocery network behind the shelf. Continue with bulk buying in Singapore and supermarket house brands.
Sources checked 28 September 2026: general pet food labelling conventions and retailer information. This page is general shopping guidance, not veterinary advice; ask your vet about your pet’s diet. Last updated 28 September 2026.
