Cute dog, he sounds like he was a sav.
I gotta deal with tha same thing, my Dog has Cancer in her lymph nodes(right on her neck). It just sarted last week. the Vet told me that If I decided to not do anything, the dog would live 30 to 50 days from diagnosis. Or I could give her steroids with the antibiotics I'm already giving her, and she'd live like a couple months maybe. But i'm definitely not doin' The chemotherapy, Itz too expensive, and I just can't do that to my dog. She looks like she's hurtin'a little bit, but she is still acting normal overall. I'm findin' it hard to even look at my dog without cryin' now.