Portrait of a Tobas warrior during carnival called The Devil Dance (La Diablada), Oruro, Bolivia, South America

Tanks on display and Rodina Mat monument, Museum of the Great Patriotic War, Kiev, Ukraine, Europe

Tanks on display at the Museum of the Great Patriotic War, Kiev, Ukraine, Europe

Dominant male proboscis monkey (Nasalis larvatus) in aggressive display to other males, Labuk Bay Proboscis Monkey Sanctuary, Sabah, Borneo, Malaysia, Southeast Asia, Asia

Male black grouse (Lyrurus tetrix) fighting on snow covered field, Finland

Male black grouse (Lyrurus tetrix) fighting on snow covered field, Finland

Male black grouse (Lyrurus tetrix) fighting on snow covered field, Finland

Adult black-legged kittiwake (Rissa tridactyla) in combat with a second kittiwake near Alexander Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Guadalupe fur seals (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Young adult bull southern elephant seal (Mirounga leonina) holding young pup's head underwater trying to kill it, South Georgia Island, Southern Ocean

Whitebacked vulture (Gyps africanus) threat display, Zimanga Game Reserve, KwaZulu-Natal, South Africa, Africa

Northern giant petrel (Macronectes halli) threat display on the beach at Stromness, South Georgia, Southern Ocean, Polar Regions

Battle-scarred beachmaster southern elephant seal (Mirounga leonina) bellowing a challenger, Peggotty Bluff, South Georgia, Polar Regions

Female southern elephant seals (Mirounga leonina) showing slight aggression at Moltke Harbor on South Georgia, Polar Regions

Whitebacked vulture (Gyps africanus) threat display, Zimanga Game Reserve, KwaZulu-Natal, South Africa, Africa

Whitebacked vulture (Gyps africanus) threat display, Zimanga Game Reserve, KwaZulu-Natal, South Africa, Africa

Sub-Antarctic Skua (Catharacta antarctica) displaying aggression after a fight for a fish head on Barrentos Island in the Aitcho Island Group, south Shetland Islands, Antarctica.

Two young California Sea Lion bulls (Zalophus californianus) mock-fighting in the Gulf of California (Sea of Cortez), Mexico.

Hippopotamus (Hippopotamus amphibius), measuing their strength in a threat display, Orangi River, Serengeti, Tanzania, Africa

Brown Bears (Ursus arctos), Neuschoenau wildlife enclosure, Bavarian Forest, Bavaria, Germany, Europe, PublicGround

Black grouse, also blackgame or blackcock (Lyrurus tetrix) courting males in fighting stance, Hedmark, Norway, Europe

Dall's sheep (ovis dalli) rams hitting heads together during dominance display, butting heads, in autumn, denali national park, Alaska, united states of america

gelada baboon portrait male baboon displaying its teeth and gums with lip flipped back threat display Simien Mountains National Park Ethiopia Africa Animals