It could be. If it is a bear, it is a small boar.
You will find 2 types of "bear trees". One is simply marked from a bear, usually cubs, climbing. The other is closer to what you have a picture of. These trees are marked by boars. They will claw them and bite them. Some believe that the biting is intentional to release the natural scent of the tree. It is there way of announcing their presence in the area. It also is used to attract females, even when they are not in heat. No one is sure why, but bears will sometimes pair off for a time, even if no mating is going on. If the female is interested, she will rub the tree. When the boar returns and finds her scent, he will start looking for her.
If it during mating season, the female will be close by, but stay out of sight until she sees the boar. Then she will make up her mind.
Check nearby the tree, within 100 yards. You will be looking for deep front paw tracks. A dominant female will often do a stiff legged walk to lay down scent. This is usually meant to warn off other females. She is claiming the area in anticipation of the mating, in preparation for the following spring.
Also, check with your DNR. The PA DNR has done extentive bear studies. There may be a local biologist you can get in contact with. They also have a VHS tape available that is very good. It includes some very good footage.
Hope this helps.
