shell fight of hermit crabs

Fight of hummingbird

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Shell

Museum of Contemporary Art Tokyo

Tokyo Museum Collection

Fight

Tokyo Photographic Art Museum

Tokyo Museum Collection

Fight for a nest in great cormorants Phalacrocorax carbo

Osaka Museum of Natural History

Movie Archives of Animal Behavior

White Shell

Pola Museum of Art

Pola Museum of Art Collection

Landscape in the Shell

Museum of Contemporary Art Tokyo

Tokyo Museum Collection

[Cock Fight]

Náprstek Museum

Database of Japanese Art in Overseas Collections

Shell and Bird

The National Museum of Modern Art, Tokyo

Union Catalog of the Collections of the National Art Museums, Japan

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

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Shell Motifs

Metropolitan Museum of Art

The Metropolitan Museum of Art Digital Collection

A home-shell change in a hermit crab

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Educational Picture:Japanese　(Children Life to Fight)

Keio University Media Center

Digital Collections of Keio University Libraries

Watching a Cock Fight

Museum of Fine Arts, Boston

Museum of Fine Arts Boston Collection

Female fighting of Dorcus rectus rectus

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Male-male competition of Japanese scorpionfly

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Shell with Red Pigment

Tokyo National Museum

Integrated Collections Database of the National Museums, Japan

Shell with Red Pigment

Tokyo National Museum

Integrated Collections Database of the National Museums, Japan

Shell with Red Pigment

Tokyo National Museum

Integrated Collections Database of the National Museums, Japan

Shell with Red Pigment

Tokyo National Museum

Integrated Collections Database of the National Museums, Japan

Shell with Red Pigment

Tokyo National Museum

Integrated Collections Database of the National Museums, Japan

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