A thought it was a rabbit due to it’s size. The body shape was like a beaver save for a round thick furry tail. He is in Central Arkansas near a wooded area next to the Arkansas River. Is is brown or gray in color.
He had a bushy tail; muskrats seem to have a naked tail.
They seem to be found in Arkansas. I’ve never seen one myself but they seem to have a round, furred tail.
Baby otter?
That’s Eb. His fambly’s good folks, they just a little funny is all.
Ground hog?
My first thought was groundhog, but his tail was much longer. It was quite furry, like an angry cat or a squirrel, and nutria and muskrats seem to have near naked tails.
Way too big and fat for a squirrel. He waddled trying to run away from me. My first thought was that he was ill being near human habitation, so I left him alone. He moved like a coon or o’possum. 
Webbed feet?
I did not see.
He must be Marmota monax monax , a woodchuck. Perhaps I misjudged the tail length in sheer terror of watching him waddling towards me.
Thanks, all.
Here she comes now saying monax monax
Tail’s too long, turn around; must be monax
Chucking in the woods and I feel alright now
Come on if it could chuck that wood
You know it would, Yeah you know it would
I say yeah!
Yeah!
Yeah!..
sorry
That marmot is le cute. He looks like a woodchuck, or groundhog, which is what I call them. Are they the same animal – woodchucks and groundhogs?
Yes.
Q: How much wood could a woodchuck chuck?
A: All the wood a woodchuck could chuck if a woodchuck could chuck wood.
Aw, nuts. And here I was hoping that it was a chupacabra.
We have no goats for it to carry off, and the occasional rabbits I’ve seen could have given this guy a fight on a size to size basis.
Reported.