Thanks again everyone.

Taffy was taken to the vet today while I was at school. She said it was just arthritis and gave him a shot of steroids to help loosen his legs back up. She said his heart is beating nice and strong and sounds fine and the cyst on his back is nothing to worry about. She also said the lump my dad felt was just a callus (sp?) from laying on his side.

Right now I'm just glad it isn't anything too serious. I was worried about an internal cyst or something. I'm just glad he is ok! (And she said he probably has never had a heart attack, that was just the arthritis)