They can jump as high as nearly 25 times their size and are very good predators.Īdults can grow anywhere between 1/8 th and 3/4 th of an inch in size. Jumping spiders are famous for their leaping capacities and quick reflexes. It may however be noted that jumping spiders can also be gray, tan, or brown in color with yellow, pale white, blue, gray, green, or red markings. Hence, they are often mistaken to be black widow spiders. Jumping spiders have black compact bodies and comparatively short legs. Physical Characteristics of Jumping Spiders Getting rid of jumping spiders from home.Physical Characteristics of Jumping Spiders.