Stallions Fighting for Dominance

Two stallions fight for dominance and mating rights in a herd of wild
horses. Photographer Henri Ton, 41, captured the fight between the Koniks,
or Polish primitive horses, at a nature reserve in Loevenstein, The
Netherlands.

http://www.telegraph.co.uk/earth/earthpicturegalleries/8147243/Animal-pictures-of-the-week-19-November-2010.html?image=2