TL;DR: While cats normally sleep 12-16 hours a day, sleeping over 18 hours may indicate lethargy or aging. It is rarely an emergency unless accompanied by loss of appetite or hiding, but a routine vet visit is recommended to rule out underlying issues.
What is considered excessive sleeping for my cat?
Cats are known for their love of naps, typically sleeping between 12 and 16 hours a day. When a cat begins sleeping more than 18 hours, it is often a sign of their natural aging process or simply a quiet day. However, it is important to distinguish between a deep, healthy sleep and lethargy, which is a lack of energy or interest in normal activities.
Is my cat sleeping too much a medical emergency?
- Urgency Level: Low.
- In the absence of other acute symptoms, sleeping more than 18 hours is rarely a medical emergency.
- Monitor your cat for other signs of illness, such as a lack of appetite, hiding, or changes in litter box habits.
- If your cat is otherwise acting normal when awake, you can schedule a routine check-up rather than seeking emergency care.
How does a photo or video help a vet triage my cat’s sleeping habits?
- Providing a photo or video allows a veterinary professional to evaluate body posture, breathing effort, and general coat condition.
- Visuals help distinguish between pain (such as a 'hunched' sleeping position) and comfort (such as being stretched out).
- A video of how your cat reacts when you call their name helps determine their current level of alertness.
Clinical Context (Merck Veterinary Manual)
Lethargy is a clinically relevant sign that may indicate underlying disease in cats. In cases of feline infectious peritonitis (FIP) without obvious effusion, lethargy, along with fever, weight loss, and decreased appetite, can be present. Cats infected with Cytauxzoon felis may also exhibit nonspecific signs such as depression, lethargy, and anorexia.
Chapter: Infectious Disease
Source: The Merck Veterinary Manual, 11th Edition (Page 783)