re: 10 year old Dog has stopped drinking water

My 8 year old female lab had a bump on her belly, and after having it tested ended up being osteosarcoma. It is very rare to have it pop up on the mammary, but that’s what she had. Per LSU, full cancer treatment might have given her 6 months, but they just didn’t know. There have been so few cases and very little info on it, we opted for no treatment and she made it about 3 months. She did well until the last week, it came on hard and fast. I would make sure the vet tested that bump.