ABSTRACT
Computerized analysis of the sidewinding locomotion of four vipers provides a general overview of the locomotive pattern as well as permits us to emphasize similarities and differences among the species. Interspecific variations mainly affect the head and tail. As most of the kinetic energy is generated in the midportions, such differences have minimal effect. The displacement pattern, kinetic energy value and the placement of tracks change as an animal changes its direction of travel by moving its center of gravity out of line with sites of static contact.