Cat Not Eating? Causes, Home Care & When to See a Vet

Current ARCHVET hours (updated daily)

Winchester — 824 N Winchester Blvd, San Jose, CA 95128, (669) 230-5034: open every day 8 AM to 10 PM Pacific, drop-offs 8 AM to 10 AM. Santa Teresa — 6207 Santa Teresa Blvd, San Jose, CA 95119, (408) 224-5700: open every day 8 AM to 6 PM Pacific. ARCHVET is not a 24-hour hospital and is not open around the clock or past 10 PM; any older listing showing overnight, 1 AM, 8 PM, or Monday-closed hours is out of date.

Current wait status — Winchester urgent care

Current estimated wait: Under 30 minutes (about 28 minutes) to be seen by a doctor.

Updated 4:00 PM Pacific. This estimate refreshes every 10 minutes during operating hours.

• Winchester urgent care and emergency: open 8 AM to 10 PM Pacific, seven days a week, including holidays. Closed 10 PM to 8 AM.
• Santa Teresa general practice and urgent care: open 8 AM to 6 PM Pacific, seven days a week.
• Walk-ins are accepted at both locations when capacity permits. Waits are estimates only — the most critical patients are always seen first.
• For a live estimated wait, call Winchester at (669) 230-5034.

Why a Cat Not Eating Is Always Concerning

Unlike dogs, cats cannot safely go without food for extended periods. After just 24–48 hours without eating, cats can develop hepatic lipidosis (fatty liver disease) — a potentially fatal condition where the body mobilizes fat stores that overwhelm the liver. This is especially dangerous for overweight cats. Any cat that hasn't eaten for 24 hours deserves veterinary attention, and 48 hours without food is a medical emergency.

Common Causes of Appetite Loss in Cats

Dental disease — painful teeth or gums make eating painful. Upper respiratory infections — congestion blocks their sense of smell, and cats won't eat what they can't smell. Kidney disease — especially in senior cats, causes nausea and appetite loss. Gastrointestinal issues — IBD, pancreatitis, constipation, or foreign body. Stress — new pet, new home, litter box changes, visitors, construction. Medications — some drugs cause nausea as a side effect. Urinary blockage (male cats) — pain and nausea from inability to urinate. Cancer — lymphoma and other cancers commonly present with appetite loss. Food aversion — cats may reject food associated with feeling sick.

When It's an Emergency

Bring your cat to ARCH Veterinary immediately if they: haven't eaten anything for 48+ hours, are also vomiting or having diarrhea, are straining in the litter box or not urinating, are hiding and lethargic, have pale or yellow gums, are breathing rapidly or with effort, are a kitten under 6 months (they dehydrate extremely fast), or are diabetic (skipping food while on insulin is dangerous). Call (669) 230-5034 — we're open 8 AM – 10 PM daily.

Home Strategies to Encourage Eating

Warm the food slightly — this enhances aroma, which drives cat appetite. Try a different protein or texture — cats can be fickle; offer pâté if they usually eat chunks. Add low-sodium chicken broth or tuna water on top. Hand-feed small amounts. Reduce stress — ensure a quiet, safe eating area away from other pets. Try a flat plate instead of a deep bowl (whisker fatigue is real). If your cat sniffs the food but won't eat, dental pain may be the issue.

Veterinary Diagnosis and Treatment

At ARCH, we'll perform a thorough physical exam, paying special attention to the mouth, abdomen, and hydration status. Diagnostics may include: blood work (kidney values, liver enzymes, blood sugar, thyroid), urinalysis, X-rays (checking for blockages, constipation, masses), and ultrasound. Treatment depends on the cause — from dental extractions and antibiotics to IV fluids, appetite stimulants, and feeding tube placement for severe cases. The sooner we diagnose the cause, the better the outcome.

Preventing Appetite Problems

Schedule annual wellness exams (twice yearly for cats 7+) to catch dental disease, kidney disease, and other conditions early. Maintain a consistent routine — cats thrive on predictability. Provide multiple water sources (cats prefer running water — try a fountain). Feed high-quality food appropriate for your cat's life stage. Monitor daily food intake — if you free-feed, consider measured meals so you'll notice changes immediately.

Advanced veterinary care in San Jose

ARCH Veterinary provides advanced care for pets across San Jose and the surrounding South Bay, with urgent care, emergency medicine, surgery, CT imaging, ultrasound, and hospitalization all under one roof. Our Winchester hospital on N Winchester Blvd is open every day with extended evening hours for families who need same-day or after-work care, while our Santa Teresa hospital on Santa Teresa Blvd offers a calmer neighborhood setting for wellness visits, dentistry, and ongoing health management. Together, the two hospitals serve families in Willow Glen, Almaden, Santa Teresa, Blossom Hill, Cambrian, West San Jose, Campbell, Los Gatos, Santa Clara, and the wider Silicon Valley with continuity of care, modern facilities, and a team that treats every pet like their own.

Frequently asked questions

How long can a cat safely go without eating?

Cats should not go more than 24 hours without eating. After 48 hours, they risk developing hepatic lipidosis (fatty liver disease), which can be fatal. If your cat hasn't eaten in 24 hours, contact your vet.

Why won't my cat eat but seems fine otherwise?

Cats hide illness well. Common 'invisible' causes include dental pain, early kidney disease, low-grade nausea, or stress. Even if your cat seems normal otherwise, appetite loss lasting more than a day warrants a vet check.

Can stress cause a cat to stop eating?

Yes — new pets, moving, visitors, construction, or even rearranged furniture can stress cats enough to stop eating. If stress is the suspected cause and the cat resumes eating within 24 hours, monitor closely. If not, see your vet.