Jumping spiders are usually less than 0.8 in in length with females generally larger than males. They are among the most ornate of spiders; many species are brightly colored and strikingly patterned, with stout bodies, short legs, and a very large pair of eyes on the front of the face. The jumping spider has four pairs of eyes, with the large principal eyes giving it sharper vision than any other animal of similar size. It can identify prey, predators, and mates from up to a foot away. They can leap 10 to 40 times their own body length. It accomplishes its spectacular jumps by means of muscular contractions in the body that force body fluids into the legs, causing the legs to extend rapidly. Most jumping spiders feed on insects, while others feed primarily on web-building spiders. This little hunter was staking out my porch light in Rockaway, NJ USA. I took this with my Nikon D3100 and the 85mm macro lens.