Morley Read / Slow motion clip of a group of male Mallards (Anas platyrhynchos) competing violently to mate with a single female, Cornwall, England, UK, May 2018. (non-ex)

Konrad Wothe / Showreel of Male Chimpanzees (Pan troglodytes) attacking the alpha male of their troop, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Male Chimpanzees (Pan troglodytes) attacking the alpha male of their troop, Mahale Mountains National Park, Tanzania.

Staffan Widstrand / Two Svalbard reindeer (Rangifer tarandus platyrhynchus) fighting; antlers shedding velvet; Spitsbergen, Svalbard, Norway, September

Chris & Monique Fallows / Great white shark (Carcharodon carcharias) feeding on Brydes whale carcass (Balaenoptera brydei), Seal Island, False Bay South Africa.

Andy Rouse / Cheetah (Acinonyx jubatus) catching gazelle, Maasai Mara, Kenya, Africa

Loic Poidevin,Loic Poidevin / Dalmatian pelicans (Pelecanus crispus) squabbling over fish, Lake Kerkini, Greece, February

Danny Green / 2020VISION / Grey seals (Halichoerus grypus) two adults fighting in the surf, Donna Nook, Lincolnshire, England, UK, October. Photographer quote: "Sex and violence – grey seals are good at both! These two adolesce...

Petra Wegner / British Shorthair Cats, pair, blue and cream, one lashing out at the other

Anup Shah / African lion (Panthera leo) adult male fighting back against the adolescent male who has disturbed his sleep, Masai Mara National Reserve, Kenya. March.

Stephen Dalton / Shotgun discharge, multiflash sequence of eight images

Igor Shpilenok / Close up of Two Red foxes (Vulpes vulpes) fighting in the snow, Kronotsky Zapovednik, Kamchatka, Russia