I got my black lab because his owner passed away and he had a brain tumor before I got him. He literally had a half a brain, that side was all sunken in where they removed the tumor and part of his brain. I know that the lady that owned him paid about $5000.00 for the surgery. I had him for a couple years and another tumor formed in almost the same area(about 5-6 years later), but he was about 10 or 11 when that happened. I took him in and there wasn't to many options because of his age, prior cancer, and his size(he was huge). So I just monitored it and he lived about a year after that. He had a stroke and some kind of infection and we had him put to sleep..I don't think any of that stuff was related to the tumor. Before I got him, he was trained to be a mobility dog. He never really barked, he never gave kisses..I got maybe 4 kisses from him the whole time I had him. He never got to experience fun things labs do because he had a job and the lady who owned him was very old. I got to take him camping, swimming, to the beach, for long walks and I feel he enjoyed his last years and I'm happy I gave that to him. I hope everything turns out well for you, age will play a factor and your dog is young, its worth looking into what can be done for him. Good Luck.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD