I don't know, I go to collegehumor.com a lot and there are a lot of disgusting things on there too. It could be photoshopped, it could go either way, but even if it WAS photoshopped, they couldn't have done the whole dog, the dog would have had to be pretty fat already. They would have to photoshop the whole entire dog to get it to look like that, the chest is really big.. that looks real and the arms do too, even if you cover up the back and look at the part of the dog that looks real.. you can sort of see why the dog would be so fat. But yeah, that dog does look like a walrus. Once dogs start getting fat it's like a snowball rolling down a hill.

My friend's black lab is about 130lb. He used to be quite trim too. He gets fed a lot of tablescraps.