The Red Fox is an invasive species in the temperate deciduous forests of Japan. It's originated in Europe and was brought from has become a threatening invasive species throughout the world. It provides competition for native species and is responsible for the declines of ground nesting birds. It poses as a threat for bringing foreign diseases that could further endanger native species.
Blakiston's Fish Owl
This species is considered endangered in Hokkaido, Japan. Its existence is threatened by anthropogenic factors such as traffic collisions, power lines, and drowning in fish farm nets that destroy its habitat and kill them. It is also threatened by natural factors such as a depleting food source due to changes in river banks leading to declining fish populations.