Guess the Critter

Pretty cool stuff lately on the trail camera.  Two visits of a sly fox.  I think he's sly because he moves around so fast all of the images are blurred.   But it's a fox for sure.  I captured images of another critter that I'll post later. 

Then there is this.  Smaller, dark critter with a glint in the eyes.  You can see it in the center of the first two frames.  And then it is a blur in the left of the third frame.

Any ideas as to what it might be?  I'm stumped.