[BradC]

Not too sound like a dick (which always prefaces sounding like a dick, lol), but maybe you shouldn't buy another animal until you have your own place, with your own rules (full-time) to raise the dog in. You can't train anything (kid, dog, cat, whatever) if you don't have consistency.

Also, I agree with Renegade. Show that dog whos boss. Next time he starts to flip out, grab him, and hold his muzzle down so he can't try to bite. It will piss him off bigtime, but also let him know you aren't ****ing around.

Don't hit him though, that doesn't do any good. He needs to know you are boss, but not fear you.