They may grow to a length of about 4 metres (13 ft). Unlike many other boids they do not have heat-sensitive pits. The colouring tends to vary geographically but they tend to be a snake with brown or red saddles along the dorsum. There is a proliferation of names by hobbyists to describe colour forms. | They may grow to a length of about 4 metres (13 ft). Unlike many other boids they do not have heat-sensitive pits. The colouring tends to vary geographically but they tend to be a snake with brown or red saddles along the dorsum. There is a proliferation of names by hobbyists to describe colour forms. |