Updated September 25, 2026. Fact-checked against veterinary sources; review by a licensed veterinarian is in progress. See our editorial policy.
Quick answer: Short-term changes to your pet’s feeding routine are sometimes needed, such as fasting before surgery, bland meals after a stomach upset, or different timing while traveling. Follow your vet’s instructions for anything medical, keep the same food when possible, and return to the normal routine gradually. Cats shouldn’t go more than about a day without eating.
Before surgery or sedation
- Follow your clinic’s fasting instructions exactly. Current guidance often allows a small meal several hours before, and water until shortly before.
- Ask about giving regular medications, especially insulin.
After surgery
- Offer a small meal once your pet is fully awake, usually the evening after surgery.
- Return to normal portions over a day or two.
- Call your vet if your pet won’t eat by the next day.
After a mild stomach upset
- Offer small, frequent bland meals or a vet gastrointestinal diet for 2–3 days.
- Gradually mix back in the regular food. See home care for upset stomach.
Travel
- Feed a light meal a few hours before car travel to reduce motion sickness.
- Bring your pet’s usual food and water. See feeding during travel.
Boarding or pet sitters
- Pre-portion meals in labeled bags.
- Write clear instructions, including medication timing and treats allowed.
- Pets may eat less for a day or two from stress. Ask the sitter to report if your pet skips more than a meal or two.
Returning to normal
Go back to the regular routine gradually over a few days, and watch appetite and stool.
Sources
- Grubb T, et al. 2020 AAHA Anesthesia and Monitoring Guidelines for Dogs and Cats. J Am Anim Hosp Assoc. 2020
- Merck Veterinary Manual: Nutrition in small animals
- WSAVA Global Nutrition Committee: Nutrition toolkit
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.