Jumping spiders are small to medium in size, stout-bodied and short-legged, with a distinctive eye pattern. The body is rather hairy (pubescent) and frequently brightly colored or iridescent. Some species are antlike in appearance. The jumping spiders forage for their prey in the daytime. They approach prey slowly and, when a short distance away, make a sudden leap onto the unfortunate animal. They are good jumpers and can leap many times their own body length. I don't know why, but jumping spiders don't creep me out the way their larger brethren do.

Jumping spiders are easily distinguished from other spiders by their four big eyes on the face and four smaller eyes on top of the head. Around the world there are probably more than 5000 species of jumping spiders. Jumping spiders are charming lil buggers that look up and watch you.  Although a jumping spider can jump more than fifty times its body length, none of its legs has enlarged muscles. The power for jumping comes from a quick contraction of muscles in the front part of the body increasing the blood pressure, which causes the legs to extend rapidly much as the hydraulics in a low-rider car.

Salticids are perhaps as old and diverse as mammals, though not many humans know of their world. Many salticids are colorful, they take on a variety of body forms, and some have disguises, looking like ants and other organisms. Phidippus audax is one of the most common jumping spiders in North America. It is commonly called the bold or daring jumping spider.