Supplementary Video 1. Agkistrodon contortrix in Kentucky engaged in food-induced combat

Supplemental Video 3. Northern cottonmouths in North Carolina engaged in food-induced male-male combat

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Warriors in Combat

Honolulu Museum of Art

Honolulu Museum of Art Collection

Supplementary material 2 (Video). Changes in sailfish breathing from gill pump ventilation to ram ventilation

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Supplementary material 1 (Video). “Pose” cleaning-request behavior of sailfish and response of marlin suckers

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Kumagai and Atsumori in Combat

Minneapolis Institute of Arts

Minneapolis Institute of Art API

Video 1 Bobcat Body Rubbing

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Supplementary material 1 (Video). The aggressive behavior of marked worker toward an attached worker

Osaka Museum of Natural History

Movie Archives of Animal Behavior

[Village scene in Japan showing people engaged in various activities]

Library of Congress

Digital Collections, Library of Congress

Glibenclamide prevents coronary vasodilation induced by β[1]-adrenoceptor stimulation in dogs

NDL Digital Collections

NDL Digital Collections

Japanese coolies engaged in the work of blasting rock

Auckland Libraries

DigitalNZ New Zealand API

New Food Products in Japan

Stanford University Libraries

Stanford Libraries SearchWorks

[Battle scene - soldiers engaged in close fighting on a battlefield]

Library of Congress

Digital Collections, Library of Congress

Supplementary material 2 (Video). The escape behavior of marked worker from an attached worker

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Combat mission statistics. Report No. 1-c(1), USSBS Index Section 6

NDL Digital Collections

NDL Digital Collections

Kainic acid-induced gene expression in the rat hippocampus

NDL Digital Collections

NDL Digital Collections

Radiation-induced apoptosis in mouse embryonic limb bud cells in vivo and in vitro

NDL Digital Collections

NDL Digital Collections

Differences in ischemia-induced accumulation of amino acids in the cat cortex

NDL Digital Collections

NDL Digital Collections

Staple Food Prices in Japan 1930-1948

NDL Digital Collections

NDL Digital Collections

Staple Food Prices in Japan 1930-1948

NDL Digital Collections

NDL Digital Collections

Woman Preparing Food for Insect in Cage (?)

Philadelphia Museum of Art

Philadelphia Museum of Art collection

CultureQuest business [electronic resource] : Japan. Women in the workforce [video]

Stanford University Libraries

Stanford Libraries SearchWorks

CultureQuest business [electronic resource] : Japan. Tendencies in risk taking [video]

Stanford University Libraries

Stanford Libraries SearchWorks

Calcineurin is involved in insulin-like growth factor-1-induced hypertrophy of cultured adult rat ventricular myocytes

NDL Digital Collections

NDL Digital Collections

Search for the photo-induced phase transition in organic solids

NDL Digital Collections

NDL Digital Collections