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Bison Males Head Butting in Yellowstone National Park
Buffalo, Bison bison, aggressively head-butting in a strength contest along the Madison River in May in Yellowstone National Park, Wyoming, USA
Author: Lee H. Rentz
© Lee H. Rentz: All Rights Reserved
Photo size: 1.5 Mpixels (4.29 MB uncompressed) - 1500x1000 pixels (5x3.3 in / 12.7x8.5 cm at 300 ppi)