Lethargy in cats

By
✔ MRCVS
BVMS
Updated October 16, 2025
6 min read

What to do

Causes

When to worry

Prevention

Diagnosis

Home treatment

Vet treatment

Risk

Other causes

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Lethargy in cats

By
✔ MRCVS
BVMS
Updated October 16, 2025
6 min read

Lethargy means low energy and is a very common problem in cats. There are many different causes of lethargy in cats. Conditions that cause lethargy can range from something mild that passes quickly to more serious conditions.

Lethargy can be a symptom of almost all conditions that affect cats, so a physical exam or diagnostic tests are often needed to determine the cause. We can also describe lethargy as listlessness, tiredness, or weakness. Lethargy is a symptom that can affect cats of any age.

What to do if your cat is lethargic >What to do if your cat is lethargic [What to do

Most common causes of lethargy in cats >Most common causes of lethargy in cats [Causes

When you should be worried about lethargy in cats >When you should be worried about lethargy in cats [When to worry

Tips on how to prevent lethargy in cats >Tips on how to prevent lethargy in cats [Prevention

How to know if your cat is lethargic >How to know if your cat is lethargic [Diagnosis

How to treat a lethargic cat at home >How to treat a lethargic cat at home [Home treatment

Vet treatment for lethargy in cats >Vet treatment for lethargy in cats [Vet treatment

Are some cats more at risk of lethargy than others? >Are some cats more at risk of lethargy than others? [Risk

Other causes of lethargy in cats >Other causes of lethargy in cats [Other causes

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