To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Video 4 Movie S4. Urination of an elephant (mass of 3,540 kg). Time slowed by 33 times. Duration of urination does not change with body size Patricia J. Yang, Jonathan Pham, Jerome Choo, and David L. Hu PNAS. 2014. 111:11932-11937 DOI: 10.1073/pnas.1402289111 Download Original Video Browse All Videos »