Female-female fighting behavior of the Japanese horned beetle

Bark carving behavior of the Japanese horned beetle

Female fighting of Dorcus rectus rectus

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

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

Feeding behavior of a flower beetle

Female refusal behavior before mounting of the Japanese badger Meles anakuma

Agonistic behavior in Pugettia quadridens quadridens

Tinbergen's Experiment - Key stimulus releasing fighting behavior of three-spined stickleback Gasterosteus aculeatus

Male-male fighting of northern elephant seals

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)

Mating behavior of the Japanese burnet moths

Mating behavior of the Japanese burnet moths

Male-male fighting of Harbor seals 1

Male-male fighting of Harbor seals 2

nuptial gifting behavior of the Japanese scorpionfly

Mating behavior of the Japanese badger Meles anakuma

Mating behavior of the Japanese badger Meles anakuma

Courtship behavior of female three-spined stickleback Gasterosteus aculeatus

Mating behavior and female reluctance of the white tailed zygaenid moths

Fighting behavior of three-spined stickleback Gasterosteus aculeatus released by its reflected image in a mirror

Female-female combat in Nephila clavata