The town of Takikawa, on the northern island of Hokkaido, purchased and installed a pair of the robots after bears were found roaming neighborhoods in September. City officials said there have been no bear encounters since.
Bear sightings are at a five-year high, mostly in rural areas in western and northern Japan, national broadcaster NHK has reported. There have been dozens of attacks so far in 2020, two of them fatal, prompting the government to convene an emergency meeting last month to address the threat they pose.
The robot called Monster Wolf consists of a shaggy body on four legs, a blond mane and fierce, glowing-red eyes. When its motion detectors are activated, it moves its head, flashes lights and emits 60 different sounds ranging from wolfish howling to machinery noises.
Machinery maker Ohta Seiki has sold about 70 robots since 2018.
The real Japanese wolf roamed the central and northern islands of the country before being hunted to extinction more than a century ago.
Takikawa city officials said that bears become more active and dangerous as they search for food before going into hibernation in late November. A decrease of acorns and nuts in the wild this year may have driven the animals to venture closer to towns in search of sustenance, according to local media.