Adult bull southern elephant seals (Mirounga leonina) fighting for breeding grounds on South Georgia Island, Southern Ocean

Traditional Ger dancers at The Maharana's City Palace for annual Hindu Holi Fire Festival by The Zenana Mahal, Udaipur, Rajasthan, India.

Shriji Arvind Singh Mewar of Udaipur, 76th Custodian of the House of Mewar, presides at annual Hindu Holi Fire Festival at The Zenana Mahal in the City Palace, Udaipur, Rajasthan, India. With him is wife Maharani Vijaya Laxmi and son and heir Lakshyaraj Singh Mewar of Udaipur, Maharaj Kumar

Shriji Arvind Singh Mewar of Udaipur, 76th Custodian of the House of Mewar, presides at annual Hindu Holi Fire Festival at The Zenana Mahal in the City Palace, Udaipur, Rajasthan, India. With him is wife Maharani Vijaya Laxmi and son and heir Lakshyaraj Singh Mewar of Udaipur, Maharaj Kumar

Shriji Arvind Singh Mewar of Udaipur, 76th Custodian of the House of Mewar, presides at annual Hindu Holi Fire Festival at The Zenana Mahal in the City Palace, Udaipur, Rajasthan, India. On his right is son Lakshyaraj Singh Mewar of Udaipur, Maharaj Kumar.

Shriji Arvind Singh Mewar of Udaipur, 76th Custodian of the House of Mewar, presides at annual Hindu Holi Fire Festival at The Zenana Mahal in the City Palace, Udaipur, Rajasthan, India.

Shriji Arvind Singh Mewar of Udaipur, 76th Custodian of the House of Mewar, presides at annual Hindu Holi Fire Festival at The Zenana Mahal in the City Palace, Udaipur, Rajasthan, India. With him is son and heir Lakshyaraj Singh Mewar of Udaipur, Maharaj Kumar and Hindu priests

Shriji Arvind Singh Mewar of Udaipur, 76th Custodian of the House of Mewar, presides at annual Hindu Holi Fire Festival at The Zenana Mahal in the City Palace, Udaipur, Rajasthan, India. On his right is son Lakshyaraj Singh Mewar of Udaipur, Maharaj Kumar.

Mustangs fighting in the Red Centre, Northern Territory, Australia

Lappet Faced Vultures feasting on an animal carcass, Grumet, Tanzania, East Africa

Lappet Faced Vultures feasting on an animal carcass, Grumet, Tanzania, East Africa

Lappet Faced Vultures feasting on an animal carcass, Grumet, Tanzania, East Africa

Giraffe in Moremi National Park, Botswana

Olive Baboon glaring at Vervet Monkey (Green Monkey), Grumeti, Tanzania

Lappet Faced Vultures feasting on an animal carcass, Grumet, Tanzania, East Africa

Lappet Faced Vultures feasting on an animal carcass, Grumet, Tanzania, East Africa

Lappet Faced Vultures feasting on an animal carcass, Grumet, Tanzania, East Africa

Elephants in Moremi National Park, Botswana

Mother elephant and calf feed in woodland in Moremi National Park, Botswana

Herd of three giraffes in Moremi National Park, Botswana

A herd ofGiraffes in Moremi National Park , Botswana

Giraffe in Moremi National Park, Botswana

Pack of timber wolves (canis lupus) asserting hierarchy, captive

Polar Bear (Ursa maritimus) on sea ice off the sub-arctic coast of Hudson Bay, Churchill, Manitoba, Canada. Bears come to the coast of Hudson Bay in Fall waiting for the ice to freeze, and looking for a careless seal or dead whale to wash up. Global warming has shortened their winter so they are increasingly anxious as they wait for winter. While they wait, they engage in frequent wrestling matches to determine a mating hierarchy for the breeding season in March and April, and regularly check on the ice to see if it will carry them out to sea.

Mackenzie valley wolves, canadian timber wolves (Canis lupus occidentalis), young wolves, hierarchy fights, biting

Parade of sailing ships during Kiel Week 2006, Kiel Fjord, Schleswig-Holstein, Germany

Combat of queens, Swiss cow fighting, cow fighting arena Aproz, Valais, Switzerland

Combat of queens, Swiss cow fighting, cow fighting arena Aproz, Valais, Switzerland

Winderjammer Parade at Kieler Woche 2008 with German sail training vessel and command ship Marine Gorch Fock and further traditional sailing vessels, Kiel Fjord, Schleswig-Holstein, Germany, Europe

Parade of windjammers at the Kieler Woche 2008, Kiel Week 2008 with the sail training ship Gorch Fock of the German navy as the command ship and other traditional sailing ships, Kiel Fjord, Schleswig-Holstein, Germany, Europe

Winderjammer Parade at Kieler Woche 2008 with German sail training vessel and command ship Marine Gorch Fock and further traditional sailing vessels, Kiel Fjord, Schleswig-Holstein, Germany, Europe

Mackenzie Valley Wolves or Canadian Timber Wolves (Canis lupus occidentalis) fighting to determine hierarchy with threatening gestures

Alpine ibex (Capra ibex), also steinbock or Ibex, fighting for rank, High Tauern National Park, Carinthia, Austria, Europe

Alpine ibex (Capra ibex), also steinbock or Ibex, fighting for rank, High Tauern National Park, Carinthia, Austria, Europe

Eastern Gray Kangaroo (Macropus giganteus), two males fighting on a meadow, Great Otway National Park, Victoria, Australia, Oceania

European hares (Lepus europaeus), two males fighting, Lower Rhine, North Rhine-Westphalia, Germany, Europe

Southern Giraffes (Giraffa camelopardalis giraffa), fighting males in the dry and barren Auob riverbed, Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Two European hares (Lepus europaeus) get a taste of each other, Lower Rhine, North Rhine-Westphalia, Germany, Europe

Alpine ibex (Capra ibex), also steinbock or Ibex, fighting for rank, High Tauern National Park, Carinthia, Austria, Europe

Canadian timber wolves (canis lupus occidentalis) in winter

Burchell's Zebras (Equus quagga burchelli), adult, two males fighting, social behavior, Kruger National Park, South Africa, Africa

Fighting wolves in winter (canis lupus occidentalis)

Angolan Giraffes (Giraffa camelopardalis angolensis), two bulls fighting, Moremi Wildlife Reserve, Ngamiland, Botswana, Africa

Southern Giraffes (Giraffa camelopardalis giraffa), fighting males in the dry and barren Auob riverbed, Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Southern Giraffes (Giraffa camelopardalis giraffa), fighting males in the dry and barren Auob riverbed, Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Impalas (Aepyceros melampus), two males fighting, Sabi Sand Game Reserve, Kruger National Park, South Africa, Africa

Three European hares (Lepus europaeus) in a meadow, one jumps into the air, Lower Rhine, North Rhine-Westphalia, Germany, Europe

Wallabies (Macropus agilis) fighting on a meadow, Queensland, Australia, Oceania

African elephants (Loxodonta africana) fighting at a waterhole, Nxai Pan National Park, Ngamiland, Botswana, Africa

African elephants (Loxodonta africana) fight, Nxai Pan National Park, Ngamiland, Botswana, Africa

Impalas (Aepyceros melampus), two bucks fighting, Chobe River Front, Chobe National Park, Chobe District, Botswana, Africa

The Bull Jumping Ceremony is conducted by several tribes in the Lower Omo Valley and is the most important ceremony in a tribal man's life.The ceremony is about hierarchy and membership in the tribe and typically involves a young man who undergoes a number of rituals before he leaps onto and runs rapidly over a series of cattle held by other men who have recently bull-jumped. Once the jumping is completed, the bull-jumper is a man in the eyes of the tribe. An important part of the ceremony is a ritualistic whipping, which women actively seek out from certain men known as Mazha. Dimeka, Omo Valley, Ethiopia, 2010

Grey Wolves (Canis Lupus) Demonstrating Hierarchy, Montebello, Quebec, Canada

Precolumbian Ceramics Mochica (Moche) Culture 100-700AD important official with jaguar crown and symbols of hierarchy Museo Amano collection, Lima, Peru

European wolf rank oriented behaviour of wolves rank order Germany Animals

European wolf rank oriented behaviour of wolves rank order Germany Animals

Arctic wolf lying on a rock

Lying on a rock arctic wolf

Eurasian wild boar male drooling before fighting, France

Portrait of Siberian Tiger (Panthera tgris altaica) in winter, Siberian Tiger Park, Harbin, China

Gelada or Gelada baboon (Theropithecus gelada), fight between two males, Debre Libanos, Rift Valley, Ethiopia, Africa

Gelada or Gelada baboon (Theropithecus gelada), fight between two males, Debre Libanos, Rift Valley, Ethiopia, Africa

Gelada or Gelada baboon (Theropithecus gelada), dominant male, Debre Libanos, Rift Valley, Ethiopia, Africa

Gelada or Gelada baboon (Theropithecus gelada), dominant male, grooming with a female, Debre Libanos, Rift Valley, Ethiopia, Africa

Eastern moose (Alces americanus) males confront each other on a snowy forest track after the rutting season. A friendly fight that allows the dominant male to consolidate his stature. Parc de la Gaspesie. Quebec. Canada

Red deer (Cervus elaphus) stag fighting, England

Red deer (Cervus elaphus) facing each other before a fight at sunset during the bellowing period.

Spotted hyena or laughing hyena (Crocuta crocuta) showing submissive behaviour by flattening the ears and showing teeth. Mpumalanga. South Africa.

Big male of chimpanzee (Pan troglodytes) on mangrove branches. Republic of the Congo. Conkouati-Douli Reserve.

Muskox or Muskoxen (Ovibos moschatus) bulls fighting in deep snow during winter. Bardu, Polar Park, Norway, Scandinavia, Europe

Kenya, Masai-Mara game reserve, Thomson's gazella (Gazella Thomsonii), males fighting

Fighting Fallow Deers at Rutting Season, Cervus dama, Hesse, Germany, Europe

Kenya, Masai-Mara game reserve, Thomson's gazella (Gazella Thomsonii), males fighting

Kenya, Masai-Mara Game Reserve, Girafe masai (Giraffa camelopardalis), males

Kenya, Masai-Mara game reserve, buffalo (Syncerus caffer), males fighting

Couple of wolfs (Canis Lupus) on snow, captive, Sumava National Park, Bohemian Forest, Czech Republic, Europe

Kenya, Masai-Mara game reserve, Thomson's gazella (Gazella Thomsonii), males fighting

Kenya, Masai-Mara Game Reserve, Girafe masai (Giraffa camelopardalis), males fighting

Impalas in savanna, Khwai Okavango Delta Botswana