@poinoup he almost certainly needs to try some medication and some serious counseling. There's something really going wrong there, and it's well beyond depression or anything like that.

In my world, I just got done trying to clean up my dog's face, and while I'm glad these treatments are apparently working and the tumor is fading, the whole left side of his face looks like something out of the most extreme horror movie you've ever seen, and it was almost "comically" leaking fluid earlier, like something out of Dead Alive or Re-Animator... and I'm just getting on with this, but I don't know what the right thing to do there is. His tail still wags, and he is still excited about treats.

In good news, I finally got my vaccination reservation.