Change a cat's food gradually: offer a little of the new food separately alongside the familiar food, then increase the new amount while reducing the old as your cat accepts it. Allow at least a week and potentially longer. Do not withhold the familiar meal to make a reluctant cat give in.
Arrange the change before the old food runs out
PDSA describes a transition over roughly two weeks, starting with a small separate offering and progressing according to acceptance. Cats Protection also recommends separate bowls and a gradual change over a week or more. The useful principle is steady acceptance, rather than meeting a deadline written on a calendar.
Before starting, confirm that the new food is appropriate for your cat, read its serving and storage directions, and keep enough of the familiar food for a gradual change. If a vet has prescribed a diet or instructed a faster switch, use that individual plan.
Use three stages
| Stage | What you do | What you need to see |
|---|---|---|
| Introduce | Offer a small taste of the new food in a separate dish alongside the usual meal | The cat voluntarily eats it, rather than merely sniffing or licking the edge |
| Rebalance | Gradually increase the accepted new food and decrease the familiar food | The cat continues to eat enough overall and tolerates the change |
| Complete | Phase out the remaining old food once the new diet is being eaten reliably | A workable full-day ration of the new food, using its own feeding guidance |
A 50:50 mixture hidden in the old bowl is not the only way to transition. Separate servings make it clearer which food your cat has eaten and preserve the familiar food's texture.
Record acceptance, not just what you put down
A simple note can have four columns: date, familiar food offered, new food offered and what remained. Include any unusual signs. “Served a new pouch” is not the same as “ate a new pouch”. Photographing the leftovers can help you describe an uncertain amount to the veterinary team.
Change one practical element at a time where possible. Keeping the usual bowl location and serving routine makes the food change easier to follow. Buying a new bowl, moving the feeding station and replacing the entire menu together makes it harder to identify what the cat objects to.
When should you pause?
If the new food is refused, slow down and seek advice rather than removing access to food. Contact your vet promptly if your cat stops eating, becomes unwell or shows a marked appetite change. Do not treat several days without eating as an acceptable part of a transition.
The two dishes in Kitty Buffet may help present separate foods if the arrangement suits your cat. Check the new food's quantity separately from the bowl: our portion and bowl guide covers that distinction.
General advice for routine food changes, not a substitute for a prescribed diet transition. Sources checked 12 September 2026.
