Nighttime Visitor In My Backyard

This morning when I glanced out the kitchen window I saw large tracks in my backyard. The print was medium large and I could see the pad markings and even the claw markings. The old thing was the tracks were not spread out like most animal tracks but each print was directly behind the other one in a straight line.

I know it was not a dog track or of course not deer as theirs are hoof prints. Do you think it may have been a bear?