Why is my cat suddenly hiding?

Question

Accepted Answer

Cats instinctively hide when they feel unwell, frightened, or in pain. Unlike dogs, cats rarely display obvious signs of illness - hiding is often the first and only observable sign that something is wrong. This is an evolutionary adaptation: in the wild, a sick or injured cat that shows vulnerability becomes prey.

**Stress-related hiding** - often triggered by:
- New pets or people in the household
- Changes in routine or environment (moving, renovations)
- Loud noises (fireworks, construction)
- Loss of a companion animal or family member

**Illness-related hiding** - possible causes include:
- Urinary tract infection or blockage (especially in male cats - emergency)
- Dental pain
- Arthritis or musculoskeletal pain
- Gastrointestinal issues
- Kidney disease or other internal organ disease
- Hyperthyroidism or other hormonal conditions
- Neurological problems

**When to act immediately**: If your cat has been hiding for more than 24 hours, is not eating or drinking, hasn't used the litter box, is vocalising in distress, or is breathing abnormally, this is a veterinary emergency.

**When to monitor**: If the hiding started after a clear stressor (like a new pet), your cat is still eating and drinking normally, and seems otherwise well, you can monitor for 24–48 hours while providing safe, calm spaces and maintaining routine.

Why is my cat suddenly hiding?

When to act immediately

When to monitor

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