Jumping Spider
Salticidae
Quick answer
Jumping spiders are a huge family of small, agile spiders known for their excellent eyesight and ability to leap many times their own body length. Their large forward-facing eyes give them the sharpest vision of any spiders, which they use to stalk and pounce on prey rather than rely on a web. With thousands of species found nearly worldwide, they are curious, harmless hunters that usually live about a year.
Jumping Spider facts at a glance
| Scientific name | Salticidae (family) |
|---|---|
| Diet | Carnivore (insects and other small arthropods) |
| Habitat | Sunny walls, plants, and woodlands worldwide |
| Lifespan | About 1 year (varies by species) |
| Size | Mostly 1–2 cm (0.4–0.8 in) including legs |
| Top speed | Leaps many times its body length |
| Conservation status | Least Concern (IUCN, most species) |
| Kingdom | Animalia |
|---|---|
| Phylum | Arthropoda |
| Class | Arachnida |
| Order | Araneae |
| Family | Salticidae |
Where it lives
Sunny walls, plants, and woodlands on every continent except Antarctica, from the tropics to mountain slopes.
Remarkable eyesight
Jumping spiders have the best vision of any spider, thanks to four pairs of eyes including two very large forward-facing ones. These give them sharp, color-rich sight that they use to judge distance and identify prey, mates, and threats. Their keen vision makes them unusually aware and responsive, often turning to watch movement around them.
Hunting and jumping
Rather than catching food in a web, jumping spiders actively stalk their prey and pounce, leaping many times their own body length to land on a target. Before jumping, a spider anchors a silk dragline that acts as a safety tether in case it misses. Tiny hydraulic changes in body fluid pressure, rather than large muscles, power their explosive leaps.
Diet and behavior
Jumping spiders are carnivores that mainly eat insects and other small arthropods, helping control pests in gardens and homes. They are active by day and rely on sight to hunt, making them appear curious as they track and inspect movement. Many species perform elaborate courtship dances, with males waving colorful legs and body parts to attract females.
Diversity and harmlessness
Salticidae is the largest family of spiders, with thousands of species found on every continent except Antarctica, from tropical forests to mountain slopes. Most are small, brightly patterned, and completely harmless to humans, with venom that affects only their tiny prey. Their boldness and expressive eyes have made them popular subjects for photography and even as gentle pets.
Frequently asked questions about the Jumping Spider
Are jumping spiders dangerous to humans?
No. Jumping spiders are harmless to people, with venom that works only on their small prey. They rarely bite and would much rather flee or watch from a safe distance.
How far can a jumping spider jump?
Jumping spiders can leap many times their own body length, powered by sudden changes in internal fluid pressure rather than large muscles. They trail a silk safety line in case they miss.
Why do jumping spiders have such big eyes?
Their large forward-facing eyes give them the sharpest vision of any spider, letting them judge distance, see color, and identify prey and mates. Good eyesight is essential for stalking and pouncing.
What do jumping spiders eat?
Jumping spiders are carnivores that eat insects and other small arthropods. They actively hunt and pounce on prey by day rather than trapping it in a web.
How long do jumping spiders live?
Most jumping spiders live about a year, though some species live longer. Lifespan depends on the species, climate, and predators.
Do jumping spiders make webs?
Jumping spiders do not build webs to catch prey, but they do produce silk. They use it as a safety dragline while jumping and to build small shelters for resting, molting, and laying eggs.
