Wobbly Blue MarbleThe planet, explained for curious children.

Animal · Germany, United Kingdom, France

Zebra jumping spider

Salticus scenicus — the name this animal has in the language scientists everywhere share.

The zebra jumping spider is a tiny black and white hunter that stalks across sunny walls and pounces on its prey instead of building a web. Its two huge front eyes give it sharper sight than almost any other spider.

Where does the zebra jumping spider live?

Home: Sunny walls, fences and rocks across the northern half of the world.

In the wild it lives in these countries: Germany, the United Kingdom, France, Poland, the Netherlands, the United States, Canada, Russia.

The short profile

Fully grown: females 5-9 mm, males 5-6 mm. It weighs about 0 kilograms. On the menu: meat.

The story behind it

A zebra spider hunts the way a cat does. It creeps closer in short bursts, turns its whole body to keep the prey in view, and then leaps. The jump is not powered by muscle at all: the spider pumps body fluid into its back legs so fast that they snap straight, which flings it forward at up to about three quarters of a metre per second. Before every leap it fastens a thread of silk behind it, so a miss ends with the spider dangling safely instead of falling. It takes flies, mosquitoes and moths, sometimes up to three times its own length. In spring the males wave their striped front legs and bob their bodies in a slow dance, and a female only lets a good dancer come close.

Find it on the globe

Zebra jumping spider is there as a tiny animated figure that breathes and looks around. From far away the planet is only a blue ball; detail arrives as you zoom in, and this one appears once you are close enough. Open it on the globe.

It sits at its real coordinates, not near them — the same numbers listed in the facts above. Switch off the layer for this kind of place and it disappears again; the buttons for that are down the right-hand edge.

Questions children ask

How far can a jumping spider jump?

A zebra spider can leap several times its own body length, launching at about 0.6 to 0.8 metres per second. It does this without jumping muscles, by pumping fluid into its legs.

Are zebra jumping spiders dangerous?

No. They are only a few millimetres long and their fangs are far too small to be a problem for people. They are more likely to turn round and stare at you than to run away.

Why does a jumping spider have eight eyes?

The two big front eyes work like binoculars and judge distance, which a spider needs before it jumps. The smaller side eyes see movement all around, so nothing sneaks up from behind.

Where these numbers come from

Every figure on this page was checked against public reference sources before publication. Where sources genuinely disagree, the text says so.

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