Hiding — Symptom Guide for Cats

Cats hide for many reasons — illness, pain, stress, or changes at home. This guide helps you assess urgency, do a home check, and decide when to see a vet.

Quick Assessment

• Is this an emergency?

• Most common cause: Stress or environmental change; illness and pain are also common reasons for increased hiding.
• When to see a vet: If hiding lasts >48–72 hours, is accompanied by other concerning signs (loss of appetite, vomiting, changes in urination/defecation, lumps, limping, breathing problems), or if you’re unsure.

What this symptom looks like

Owners describe "hiding" in different ways. Common presentations include:

• Seeking out small, dark, quiet spaces (closets, under beds, behind furniture).
• Spending more time aloof, retreating when people approach, resisting being handled.
• Sleeping more than usual and reduced interest in play or pets.
• Using different spots for elimination or stopping use of the litter box (in some cases).

Possible causes (ranked by likelihood)

Decision tree — quick triage

• If hiding + difficulty breathing or open-mouth breathing → likely respiratory emergency → seek emergency vet now.
• If hiding + bleeding, trauma history, or non-weight-bearing on a limb → likely injury → seek emergency vet now.
• If hiding + not eating for >24 hours or vomiting repeatedly → likely illness/pain → call your vet same day.
• If hiding + normal appetite, normal litter box use, recent move or new pet → likely stress → monitor 24–72 hours; provide safe spaces and gradual reintroduction.
• If hiding + gradual behavior change over weeks (confusion, disrupted sleep, house-soiling) → possible cognitive dysfunction or chronic disease → schedule vet visit within 1–2 weeks.
• If hiding suddenly and accompanies collapse, seizure, or severe weakness → possible neurologic emergency → emergency vet immediately.

Home assessment steps (what to check, what to measure)

Do a calm, non-confrontational check and record what you find:

Record everything (time, appetite change, symptoms) — this helps your vet.

When It's an Emergency — clear red flags

Get emergency veterinary care now if your cat who is hiding also has any of the following:

• Trouble breathing, open-mouth breathing, or blue/pale gums.
• Seizures, collapse, inability to stand or walk.
• Continuous vomiting or diarrhea, especially with lethargy.
• Bleeding that won’t stop, obvious fracture, or severe trauma.
• High fever ≥104°F (40°C) or low temperature ≤99°F (37.2°C).
• Not eating for >24 hours and severely lethargic (risk of hepatic lipidosis, especially in overweight cats).
• Signs of poisoning (drooling, tremors, sudden weakness) or exposure to potentially toxic substances.

When to Schedule a Vet Visit (non-urgent but requires attention)

Book a same-day or next-day appointment if your cat is hiding and any of the following are present:

• Loss of appetite for 24–48 hours (Older or overweight cats: contact your vet sooner.)
• Reduced drinking or mild dehydration signs (sunken eyes, tacky gums).
• Changes in urination or defecation (straining, blood, accidents outside the litter box).
• Noticeable pain signs (hissing when touched, reluctance to jump, limping).
• Gradual behavior change over days to weeks (sleeping more, decreased grooming, increased hiding).
• Repeated episodes of hiding with other intermittent signs (vocalizing at night, pacing).

Home Care — safe things to do while monitoring

Do not give human medications, painkillers, or herbal remedies without veterinary guidance.

What to tell your vet (helpful information to prepare)

Prepare concise answers and bring any relevant items (photos, videos):

• Onset and duration: When did the hiding start? Has it been continuous or intermittent?
• Appetite/water intake: When did the cat last eat/drink? Amounts and type of food.
• Litter box: Last urination/defecation, any straining, blood, or changes.
• Other signs: Vomiting, diarrhea, coughing, sneezing, limping, seizures, vocalization, breathing changes.
• Mobility and pain indicators: Reluctance to jump, move, or be touched.
• Recent events: New pets, visitors, moving house, medications, vaccinations, possible trauma, access to toxins/plants.
• Medical history: Age, weight, chronic conditions, previous illnesses, current medications, vaccination status.
• Any videos: Short clips of breathing, gait, or behavior can be very helpful.

Final notes — when hiding is a sign of something bigger

Hiding is a common feline behavior, often harmless when it follows a predictable stressor. However, because cats are stoic and mask illness, increased or new hiding can be an early sign of pain or disease. When in doubt, err on the side of veterinary evaluation: early assessment can catch treatable problems before they become emergencies.

References

• Merck Veterinary Manual — “Behavioral Disorders of Cats” and general feline health guidance. https://www.merckvetmanual.com
• Cornell University College of Veterinary Medicine — Feline Health Center guidance. https://www.vet.cornell.edu
• American Veterinary Medical Association (AVMA) — Pet care and emergency triage resources. https://www.avma.org

Frequently Asked Questions