Male-male competition of Japanese scorpionfly

Male-male competition in Uca arcuata

Osaka Museum of Natural History

Movie Archives of Animal Behavior

The re-invasion behavior of Japanese scorpionfly males that lost the male-male competition

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Male-male agonistic behavior of Carrhotus xanthogramma

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Male-male agonistic behavior of Sitticus penicillatus (2)

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Male-male agonistic behavior of Sitticus penicillatus (3)

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Male-male combat of Otton frogs

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Male-male combat of Otton frogs II

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Major cheliped use in owner male during male-male contest of hermit crab

Osaka Museum of Natural History

Movie Archives of Animal Behavior

セボシタビラの雄間闘争

Osaka Museum of Natural History

Movie Archives of Animal Behavior

オイカワの雄間闘争

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Female fighting of Dorcus rectus rectus

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Display of a male phesant

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Fight of hummingbird

Osaka Museum of Natural History

Movie Archives of Animal Behavior

shell fight of hermit crabs

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Chasing and sneaking behavior of male Japanese bitterling

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Sei no soutou to ningenku

NDL Digital Collections

NDL Digital Collections

Copulation of Japanese Grass Lizards, interrupted by another male

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Nest defence against a brood parasite by a male Japanese bush warbler

Osaka Museum of Natural History

Movie Archives of Animal Behavior

ツノオオトゲクダアザミウマの大型雄同士の闘争（飼育下）

Osaka Museum of Natural History

Movie Archives of Animal Behavior

[Struggle of the Sunagawa Base]

Museum of Contemporary Art Tokyo

Tokyo Museum Collection

[Struggle of the Sunagawa Base]

Museum of Contemporary Art Tokyo

Tokyo Museum Collection

[Struggle of the Sunagawa Base]

Museum of Contemporary Art Tokyo

Tokyo Museum Collection

Tousou no ato

NDL Digital Collections

NDL Digital Collections

Red foxes fighting over territory

Osaka Museum of Natural History

Movie Archives of Animal Behavior