It works. Mostly. That’s the problem now. Japan needs more Monster Wolves, the creepy, fur-clad robots designed to scare away the island’s aggressive bear populations. But Ohta, the tiny company behind the invention, is completely tapped out. They can’t make them fast enough.
Launched back in 2016, the robot looked ridiculous. A pipe frame wrapped in fake fur. Menacing fangs. Red LED eyes that glow like a cartoon villain’s. It went viral for all the wrong reasons, yet it did exactly what it was supposed to. Ward off boars, deer, Asian black bears (Ursus thibetanus ), and brown bears (Ursus arctos ) that keep encroaching on farms and homes.
Today? The tech has matured, sort of. Battery powered. Solar charged. Detection sensors trigger speakers blasting over 50 clips—sirens, human voices—audible for half a mile. The catch is price. You’re looking at $4,000 minimum per unit. And because every single wolf is handcrafted? Wait times are stretching to three months.
“We make them by hand. We are asking our customers to now wait two to three months.” — Yuji Ohta
Why the rush? Bears are getting bolder. And deadlier.
Urban sprawl keeps shrinking their habitat. Food gets scarce in the wild so they come looking in our yards. The demographics aren’t helping either; an aging rural population makes elderly residents sitting alone particularly vulnerable. The stats are grim. Since 2015 began, we’ve seen 13 fatalities. 200 injuries. That mortality rate doubles the previous record. Over 50,000 sightings logged nationwide.
It’s getting bad enough that the government sent in the military last year. They cull bears. In 2024, more than 14,000 were captured and euthanized. Triple the previous year’s total.
You might think culling is enough. But Ohta says there is growing recognition that the robot wolves actually work. Farmers are the core base. Golf courses want them. Rural workers, too. The company plans upgrades. Wheels. Autonomous patrols. Even handheld versions for hikers and kids.
Until those roll off the (very small) assembly line? Read the manual. The government has safety tips. Learn them. Use them.
Because the robots are running out, and the bears are just getting started.
