Printable guide
The 10-day food transition checklist
Switching foods too fast is the most common cause of avoidable stomach upset. This is the standard gradual-transition plan: print it, stick it on the fridge, and check off each stage. To print or save as a PDF, use your browser's print function (Ctrl+P or Cmd+P).
| Days | Old food | New food | What to watch |
|---|---|---|---|
| ☐ Days 1-3 | 75% | 25% | Normal stools, normal appetite |
| ☐ Days 4-6 | 50% | 50% | Slightly softer stools are expected |
| ☐ Days 7-9 | 25% | 75% | Stools firming back up |
| ☐ Day 10+ | 0% | 100% | Stable digestion, consistent stools |
If things get bumpy
- Loose stools or vomiting: pause at the current ratio for 2 to 3 extra days before advancing.
- Mild looseness at the 50/50 stage is common and usually resolves.
- Cats often need 14 days or longer, especially after years on the same food.
Call your vet if
- Diarrhea is watery, frequent, or bloody.
- Vomiting repeats or your pet refuses food entirely.
- Anything feels off beyond a mildly unsettled stomach.
This checklist is educational, and is not veterinary advice. Ratios follow standard gradual transition guidance; adjust the pace with your vet if your pet has a sensitive stomach or any health condition. Read the full article: How to switch pet foods without stomach upset.
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