A., know you did the right thing. I have a sister I wish my parents had sent to a hospital for evaluation when she was younger, (they lived together, I wasn't there to know what was happening.) Now in her 50's she's pretty much learned how to manipulate the system, collect disability, not take her medication or participate in therapy, group or otherwise, or learn to live with others amicably. She gets upset if we say anything when she flips out, (I don't mean this in a derogatory way) because she's been allowed to behave the way she has for soooooo many years, but we are close to insisting she move on her own to a group home. She finally has mental health professionals in her life who are being more responsible in not letting her slide, but she's resisting all the way and not cooperating.
And, having lived in a city and now living so close to it, that had a fatal encounter between police and a man who was bi-polar, my hope is that every single person with mental problems seeks or is offered options for help.
http://www.ocregister.com/articles/thomas-372930-wolfe-ra...
(There's a Wikipedia article that gives a more in-depth account of what happened I chose not to cite because of a graphic picture of Mr. Thomas in the hospital. So if you look for it and read it be warned.)
I know you believe the hospital isn't doing anything, they are, if only observing him, which is a big part of their assessment. You need to take care of yourself, you're no good to anyone if you don't. Visit once a day, recruit someone to help with the dogs. I'll be praying for your whole situation.