I *highly* doubt that photo is real Collegehumor.com is a generally light-hearted site and I'm fairly sure that that photo was Photoshopped. It looks more like a walrus than a dog, and the fur looks too fake. Honestly, I can't imagine how any one dog can reach that size and still be living long enough for the owner to snap a shot.

Edited to add: Someone made a comment about the dog's long nails. Actually, they're a whole lot shorter than Giselle's and look how skinny she is!