When not hunting for prey or a mate, Portia species, including P. schultzi, adopt a special posture, called the "cryptic rest posture", pulling their legs in close to the body and their palps back beside the chelicerae ("jaws"), which obscures the outlines of these appendages.
When disturbed, most leap upwards about 100 to 150 mm, often from the cryptic rest pose, and often over a wide trajectory.