For anyone that doesnt know, humans have evolved a significant tolerance to alcohol because it does infact exist in nature in rotting fruit (you take what you can in 400000 bc) there are reports of moose losing it after only a few fermented Apples. And Elephant reportedly can get deliriously drunk off of a single beer.
I had a dog that loved beer but he was a nasty drunk. He would knock beers over to lap them up, then start growling and barking for more. Then he'd puke, eat the puke, and pass out.
I've seen this exact thing, a little terrier would wait for everyone to leave the room then he'd knock everyone's beers over and get shirfaced. I don't remember him being violent unless you tried to take the beer away