My dog Dillon started to sleep a lot and used to be very excited to see me and he started to throw up some of his food so I took him into the doctor and they found a tumor in his stomach that was going to cost around 4000 dollar so they needed to do surgery right away. Now remember he is only 8 1/2 years old so I waited and right when they put him under his heart gave out. They tried to bring him back but no luck. Later I found out the the tumor broke and poison his body, stomach , and heart. I will always remember him DILLON. John S.