Jumping spiders claim the world's sharpest spider vision:
Scientists attribute leaps in a single bound of as much as 8 inches (20.32 centimeters) to jumping spiders. With body lengths ranging from 0.1 inch (2.54 millimeters) to 0.7 inches (17.78 millimeters), salticid spiders become inversely adept at greater distances with smaller corporeal sizes and vice versa. Scientists consider three anatomical features as critical to the successful jumps effectuated by salticid spiders:
• abdomen-attached spinnerets perfecting drag-lines;
• eight eyes, with the central-positioned, forward-looking, narrow-fielded pair contributing to the jumping spider's reputation as the arachnid class's most sharp-sighted araneans and the remaining six smaller eyes facilitating all-round vision; and
• four sets of cephalo-thorax-attached (merged head and thorax), seven-segmented legs ensuring non-skid landings regardless of surface thanks to tufted claws.