It was the rutting season and these two bull Elks were testing their strength at Mammoth Springs, Yellowstone Park, Montana, USA. Although this match wasn’t particularly serious it was watched with much interest by nearby bulls for future reference. If either of these bulls had been attempting to steal the others cows the encounter would have been much more intense, to the point of serious injury.
Canon EOS 550D. Canon EF 70-300mmIS lens.