I've read that raw hops can be bad for dogs, somehow causing hyperthermia. But once it's brewed, is beer bad also? What about very hoppy beers? Answers might include reports on what it is in hops (alpha acids?) that make hops bad for dogs.
Please keep answers restricted to the effect of brewed hops. I already realize the fermented alcohol can be bad for smaller pets. I'm not looking for alcohol related answers, just answers on boiled and fermented hops.
As an aside, it seems okay for cats. Mine decided to take a sip, seemed to like it, and came back for more.