Picture Of Someone Scratching A Dogs Stomach A Question About A Lump Like Thing On My Dogs Stomach Area?

A question about a lump like thing on my dogs stomach area? - picture of someone scratching a dogs stomach

My Beagle dog was 4 years and something like a lump sum (in size, slightly smaller than a golf ball) on his stomach on his stomach and half an inch below the cage castes laid. This package is not right in the middle of the stomach, but on the side of the stomach, as here, in this table,

http://tinypic.com/view.php?pic=24c7ehy&s=4

If I noticed this package (or what it is today) and if he had to leave my first contact, and even a little pressure on him and had never cried before, or showed signs of delayed discomfort. But later in the day that people try to put this area, which is a complement to them and try a person who is biting, it's always touching when a person touches some of the painYour body. He has a scratching a lot lately, but that may due to the flea medication is applied research, which begins today. Any help or experiences are all very appreciated, thanks.