Hercules was recently awarded the honourable distinction of
Worlds  Biggest Dog by Guinness World Records.  Hercules is
an English Mastiff and has a 38 inch neck and weighs 282 pounds.

With "paws the size of softballs" (reports the Boston Herald)
the three-year-old monster is far larger and heavier than his
breed's  standard 200lb. limit. Hercules owner Mr. Flynn says
that Hercules weight is natural and not induced by a bizarre
diet: "I fed him  normal food and he just grew"... and grew...
and grew... and grew.
 
 

Photo from Snopes.com

Snopes.com reports that this story is not true at
http://www.snopes.com/photos/animals/hercules.asp