To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3 XROMM animation of the third vertebral and second, fourth, sixth, and eighth floating ribs during deep breathing in the savannah monitor (Varanus exanthematicus), savannah02. Bones were animated using Scientific Rotoscoping. Journal of Experimental Biology ; doi: 10.1242/jeb.189449 Download Original Video