“Beware of Bears” was originally used to remind people to pay attention to bears in Hokkaido, Japan, and served as a warning. Putting "attention" at the end of a sentence is a Japanese grammatical habit. Later, this yellow warning sign became a specialty trademark, and this slogan was also used in many places.

Outside of areas where real bears are found, this slogan means something like "There's a vicious dog inside," which means that there is a ferocious behemoth. Sometimes the person who says this is boasting that he will be here. passing nearby.

There is also a foreign truck club that also uses the same slogan. The members of the club: it is a vehicle with more than 2 tons and less than 20 tons. "Bear infested" means that our vehicles are very big, so we should pay attention to them. We, if you don't see it, are coming like bears, like mountains, and are going to be dangerous.