Why in the world are people giving up a dog that they have had for 7 years? You mention "normal colored lumpy growths". Have the owners found out that those growths are cancerous, and they don't want to deal with it? Are you willing to deal with it-if he has problems. He may be over weight-and that would affect his breathing. Some Bullies live to be 14. I think it comes down to what you are willing to do for this poor dog. It sure sounds like he deserves a better home than he has now. I think you are the only one who can make the decision about how much you would be willing to give in time,love and $ if needed for this beautiful fella'. Ya know everyone wants to dump ya' when ya' get old. Very sad.