The boundary fence on the east side of Petrified Forest National Park, Arizona, United States of America

Brown bear (Ursus arctos) male rubbing his back on a pine tree to leave his scent, Finland

Cape Sugarbird (Promerops cafer), calling in territorial display, Western Cape, South Africa, July

Bengal Tiger;Panthera tigris) marking the territory, Tadoba National Park, Tadoba Andhari Tiger Reserve, Maharashtra's oldest and largest National Park, Maharashtra state, Indian subcontinent, India, Chandrapur district, Asia

Red fox (Vulpes vulpes) males in territorial confrontation. Montreal Botanical Garden. Quebec. Canada

Cape Sugarbird (Promerops cafer), waving tail in territorial display, Western Cape, South Africa, July

Male Chamois marking his territory, Jura Switzerland

Male Chamois marking his territory, Jura Switzerland

Male red deer during rutting, France

Male red deer during rutting, France

Male red deer during rutting, France