What do cat fleas look like? Cat flea treatment guide

Fleas are one of the most common cat parasites. But what do cat fleas look like? Read our guide to the symptoms, treatment, and prevention of cat fleas.

If you're wondering 'what do cat fleas look like', here's one up-close. The image is attached to an article on cat fleas, what they look like, and how to get rid of them.

Overview

Cat fleas are tiny, dark brown or black, about one to two millimetres long, and with a ‘flat’ shape which helps them slip easily through fur. They don’t have wings, but their strong back legs mean they can jump surprisingly far. On cats, they’re often found around the neck, back or base of the tail, where grooming is harder.

You might also notice signs such as flea dirt (which looks like black pepper and turns red when wet) or small white eggs in bedding and carpets. While fleas are most active on pets, most of the problem lies in the home — especially in soft furnishings where eggs and larvae grow.

What do cat fleas look like?

What are the symptoms of cat fleas?

How do I check my cat for fleas?

What are the health risks of cat fleas?

How are cat fleas treated?

How can I prevent my cat and home getting fleas?

FAQs about cat fleas

Are there any studies into cat fleas?

Join the club today

Get regular health checks, vaccinations, and more, all included in your plan.

Join now

Medically reviewed by Lizzie Youens, BSc(Hons) BVSc MRCVS

Published on 13/10/2025 • Reviewed on 13/10/2025