I was giving Buster a bath last night and noticed a 1/2 dollar size lump on his chest. Of course I freaked and immediately started running the different things that it could be through my head. The lump is not hard whatsoever and I don't believe it's painful. This morning it is about 2/3 the size it was last night. If it were a tumor of some sort would it shrink? I have an appt. with the vet on Friday. Of course as always I'm expecting the worse and praying for the best.