Painful as it feels, he is giving you a gift. Try to accept it. He is content to live in a filthy, broken down house and drink. You have the opportunity to begin building an exciting new life for yourself. Finishing your education is a great idea. And I bet if you posted an ad on campus, you could find someone to dogsit. Maybe work out an exchange deal and take their dog when they need a critter sitter. This man is not capable of taking proper care of animals, himself or any other living creature.
I had to go through the motions for awhile, and was briefly on medication for depression after I left. I was in such a rut that I needed a leg up so I could begin to do the self care I needed. Being abused for years is so demoralizing. I didn't realize how low I'd gotten. That state had begun to seem normal for me.
OT- loving your avatar. You can get your fierceness back Jag. We are here for you.