Size vs Speed (IMAGE) Duke University Caption This chart shows how the ratio of mass to speed of animals follows the same general rules as airplanes. Note that the Concorde is way off of the historical trend. Credit Adrian Bejan Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.