Elephant 'Groucho running'

In the experiments, 32 of the 42 elephants moved faster than previously documented - up to 15 mph. Speedy elephants use "Groucho running" to bend their limbs and overcome the physical forces that restrict their motion.

Video: Courtesy John R. Hutchinson

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• Speedy elephants use a biomechanical trick to 'run' like Groucho


• Elephant walking


• Stanford University Neuromuscular Biomechanics Lab


• Thai Elephant Conservation Center