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Sticker of Leopard slug
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Leopard slug

Limax maximus
Name means: “biggest slug”
Eats: Leftovers and dead thingsSnails, slugs and wormsGardens and meadowsNo legsNot an insect, but a bug cousin

The leopard slug is a big grey slug covered in dark spots and blotches, a bit like a leopard. It can grow as long as a pencil. It has no shell on its back, only a tiny hidden one under the skin.

Fun fact: this one is not an insect at all, it has no legs! But kids find it on every bug hunt, so it lives in Bug Wiki too.
Lives in
First from Europe and North Africa, now in many other places too
Length
10 to 20 cm (3.9 to 7.9 in)
Top speed
about 0.04 km/h (0.02 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless. Wash your hands after touching one, like after touching any wild animal.
What does it eat?
It eats mushrooms, rotting plants and other leftovers it finds on the ground at night.
For real!Photo of Leopard slug
Picture by Michal Maลˆas. CC BY 2.5, via Wikimedia Commons.

How big is it?

How long is it?

Leopard slug about 20 cm long (7.9 in)A crayon about 9 cm (3.5 in)A banana about 18 cm (7.1 in)A house cat about 50 cm (20 in)
as long as 6 toy building bricks in a rowas long as 1 bananas end to endcould run across a dinner table in 90 seconds

How big is Leopard slug compared to YOU?

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

How fast is it?

cool stuff

Fun facts

1

Its scientific name means biggest slug.

2

Hidden under the skin on its back is a tiny flat shell, only about 13 millimetres long.

3

Two leopard slugs can meet in a very special way: they hang together in the air from a branch on a thick rope of slime.

4

Its slime has no colour but shimmers a little, like a soap bubble.

5

Outside Europe it was first found in the American city of Philadelphia in 1867.

you asked

Most asked questions about Leopard slug

?How big is a leopard slug?

A grown-up leopard slug is about 10 to 20 centimetres long.

?Is the leopard slug dangerous?

No. It cannot bite or sting and is harmless to people.

?Does a leopard slug have a shell?

Yes, but a very small one, hidden inside its body under the skin of its back.

For bug experts

Scientific name
Limax maximus
Group
Snails, slugs and worms
Family
Limacidae
Classification
Gastropoda > Stylommatophora > Limacidae
Lives on
Europe, Africa, North America
Also known as
Great grey slug

Where the facts come from

  1. Limax maximus (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 Michal Maลˆas. CC BY 2.5, 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 [email protected] and we will fix it.

More from the same group: Snails, slugs and worms

Also at home here: Gardens and meadows