Female fighting of Dorcus rectus rectus

Female-female fighting behavior of the Japanese horned beetle

Male-male fighting of northern elephant seals

Male-male fighting of Harbor seals 1

Male-male fighting of Harbor seals 2

Female-female combat in Nephila clavata

Male-male fighting in a butterfly

Fighting Thomson's gazelle

Agonistic interaction of Kajika frog (Buergeria buergeri) 2: escalated fighting

Red foxes fighting over territory

Male-male fighting behavior of the seed bug, Togo hemipterus

Long calls after fighting

Female great call at the climax of the duet song

Fighting Cock [verso: Master of Fighting Cock]

Carp , Female

Narwhal , Female

Male-male competition of Japanese scorpionfly

Male-male agonistic behavior of Carrhotus xanthogramma

Male-male agonistic behavior of Sitticus penicillatus (2)

Male-male agonistic behavior of Sitticus penicillatus (3)

Male-male agonistic behavior of Sitticus penicillatus (1)

Male-male combat of Otton frogs

Male-male combat of Otton frogs II

Courtship behavior of female three-spined stickleback Gasterosteus aculeatus

(Group of samurai fighting)