I used a search engine on 'giant rabbit' and there's a british article with another couple of pictures of this same guy grabbing a large rabbit by the scruff. The second image down could be poor photoshop too, but it's harder to tell. Dunno.

http://news.bbc.co.uk/cbbcnews/hi/newsid_4690000/newsid_4694200/4694270.stm