The original intention of "Attention to Bears" is this: There are two kinds of symbolic animals in Hokkaido, one is an owl, and the other is a bear. You can always see these two in the shops of tourist spots and resorts everywhere. In the past, there were probably enough bears in Hokkaido, so people posted warning signs of "Bear infestation" in places where bears frequented. Now, this warning slogan has become a trademark, with black characters on a yellow background, and it has become a feature of Hokkaido on many commodities such as T-shirts and wine glasses.
In addition, "Bear Head" also means "Don't mess with me". Sticking it to the rear of the car can remind the rear car to keep a certain distance from the front car, so as not to bump into it. I also heard a friend say that if a piece of paint falls off the car body and you don't want to spray it, you can buy a "bear's head" and stick it on it, which means that the fashion is different and it can cover up the paint falling off the car, killing two birds with one stone.