Bug Wiki
Sticker of Cat flea
Bug card No. 0247 of 1,500

Cat flea

Ctenocephalides felis
Eats: BloodOther insectsHouses and farms6 legs

The cat flea is a tiny, wingless, reddish-brown insect that lives in the fur of cats and dogs. Its body is so flat from side to side that it slides easily between hairs. It is a super jumper and can leap onto a new animal in a few seconds.

Lives in
All over the world, wherever there are cats and dogs. It first came from Africa
Length
1 to 2 mm (0.04 to 0.08 in)
Top speed
about 0.45 km/h (0.28 mph)
On foot, estimate
Can it hurt you?
Can bite or sting
Its bites itch, and fleas can pass a tapeworm to pets. If your pet scratches a lot, tell a grown-up so a vet can help.
What does it eat?
Grown-up fleas drink the blood of cats, dogs and sometimes people. The baby larvae eat the dried crumbs of blood that the grown-ups leave in the fur.
For real!Photo of Cat flea
Picture by Andrei Savitsky. CC BY 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Cat flea about 2 mm long (0.08 in)A grain of rice about 6 mm (0.24 in)
3 of them in a row are as long as one grain of ricecould run across a dinner table in 8 secondsmoves 62 times its own body length every second

How big is Cat flea compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

Most of the fleas found on dogs are actually cat fleas.

2

A flea that falls off its animal usually dies of hunger within a few days.

3

A new flea waits in its cocoon until it feels warmth, shadows and breath nearby, then jumps out onto the animal.

4

Only a few of the fleas in a house are grown-ups. Most are eggs and larvae hidden in carpets and pet beds.

5

A cat flea can live up to two years.

you asked

Most asked questions about Cat flea

?Can cat fleas bite people?

Yes, they sometimes bite people too. The bites itch but are not dangerous for most people.

?How big is a cat flea?

It is only 1 to 2 millimetres long, about the size of a sesame seed.

?Where do cat flea eggs go?

The eggs are not sticky, so they fall off the animal into beds, carpets and the floor.

For bug experts

Scientific name
Ctenocephalides felis
Group
Other insects
Family
Pulicidae
Classification
Insecta > Siphonaptera > Pulicidae
Lives on
Africa, Europe, Asia, North America, South America, Australia and Oceania

Where the facts come from

  1. Cat flea (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
  2. Picture by Andrei Savitsky. CC BY 4.0, Wikimedia Commons. The round sticker of this bug is cut from the same picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at hello@bugwiki.app and we will fix it.

More from the same group: Other insects

Also at home here: Houses and farms