Here's the problem with "identify this track" pictures:
1. The photo is blurred.
Yeah I am sorry about that!
2. We don't know the size. Despite the OP's hand in the picture, we don't know his hand size. Most of us don't, anyway. We need an inarguable measure in there... quarter, dollar bill, or 12-inch ruler.
about 7 1/2" from tip of middle finger to wrist on thumb side.
3. We don't know the exact location. That helps us rule out the unlikely. For example, dogs are unlikely in the far off wilderness, and wolves are unlikely in areas bounded by civilization.
Highway rest area, edge of woods. Northern CT, bordering MA
4. We don't know the temperature over the last week or so.
30 defree high, 9 degree low F
5. One picture is NOT good for identifying tracks. We need two pictures, at least, from different angles, as well as an establishing picture to show the stride of the animal.
CAN'T HELP YOU THERE 
That said...
1. It's a canine based on the heart-shaped heel pad. Cats have an M-shaped heel pad, and bears have a very different configuration to the pads entirely.
2. It's an indirect register, which has put the rear foot *nearly* into the front print. Just enough to blur the two. That's largely indicative of a canine. Cats tend to directly register, whereas dogs rarely do (foxes do, and some dogs at a slow speed will directly register as well). (Good job Magnussen!)
3. A bear will put its front and rear tracks fairly close together as it ambles. There is no rear print in this picture. Compare it to the pics of known bear tracks already posted in this thread: see the front and rear feet? Very close together.
4. The print shows very evident indication of having melted. That can more than double the size of the track.
Conclusion: without more evidence, we can rule out the extraordinary and stick with the ordinary. This is a dog track. I'd say something in the 80+ pound range (retriever to shepherd), after about two days of exposure to sunlight and/or just-above-freezing conditions.