Chasing and sneaking behavior of male Japanese bitterling

Male-male sexual behavior in Cobitis magnostriata

Sneaking of male guppy

Courtship behavior of male red-eared sliders and female rejection response

Mating behavior of the white-spotted longicorn beetle, Anoplophora malasiaca.2 Male mate orientation regulated by olfactory and visual cues

Male three-spined stickleback chasing a female out of the territory

Hindquarters display: courtship display by the male Japanese macaque

Male three-spined stickleback Gasterosteus aculeatus under fanning turned out a female

Nest visiting behavior of male staghorn damselfish

Courtship behavior of a male Bengalese finch

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

Mating behavior and male gathering of the white tailed zygaenid moths

Undirected song behavior of a male Bengalese finch

Playfull chasing of a father and his son

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

Interruption of courtship behavior of male three-spined stickleback Gasterosteus aculeatus

Mating behavior of Japanese black salamanders

Oat-rinsing behavior of Japanese monkeys on Kou-jima

Copulation of Japanese Grass Lizards, interrupted by another male

Courtship and mating behavior of Bengalese finch

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

Encountering when a male visited the territory of a female

Male-male combat of Otton frogs

Mating behavior of the Japanese burnet moths

Mating behavior of the Japanese burnet moths