Competition over food resources in the snake Dinodon semicarinatus

Male-male competition in Uca arcuata

Male competition of the field cricket

Competition for mate in male striped eel catfish

Male-male competition for eggs in the filefish Rudarius ercodes

Food search in a polychaete worm Eunice aphroditois

A raccoon searching for food in water

Male-male competition of Japanese scorpionfly

Red foxes fighting over territory

Fight for a nest in great cormorants Phalacrocorax carbo

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

Feeding of Calommata signata in the burrow

Seven Planetary Gods: Mars Presiding over the Arts of War

Food searching in the gray heron

Prey stealing (Kleptoparasitism) in the gastropod Cronia margariticola

Foraging in the great tit

In the dark nest, a red-flanked bushrobin host attempting twice to place food onto the wing patch of the Horsfield's hawk cuckoo chick by mistake

Parental feeding of young in the rail Gallinula chloropus indica

Fight for a nest in great cormorants Phalacrocoraz carbo(Long version)

Feeding nestlings in the Madagascar paradise flycatcher

Agonistic behavior in Pugettia quadridens quadridens

Male-male fighting in a butterfly

The Large Miseries of War: The Battle

Journey around the StarsⅡ

Journey around the StarsⅠ