Cat tracks, now as for what kind of cat, its difficult to understand without knowing where you are. As for the size (finger/thumb loop) that could be either.
Typically domestic cats prints are smaller than a bobcat, but I have seen pretty large feral Toms that leave large traks.
If its around dumpsters, I would tend to lean towards feral cat more so than Bobcat. But if Bobcats are common around the area, it could very well be just that.
The biggest ways to tell the difference between feline and canine tracks is as Ben said the X being able to be drawn between the toes and pads. Also some other distinctions are cats have a 3rd lobe on the rear edge of the heel pad. Dogs heel pad kind of looks like a triangle with the sides caving in. Most of the time if you see toe nails in the prints, its a dog as cats retract their claws except when running/climbing or pouncing
