moose don't seem as hostile to me. I respect them because i know they can inflict damage, but bull bison just seems to have such a bad attitude all the time.
Cows kind of freak me out too, though. Especially in the spring when there are young calfs around. When I encounter a herd of cattle, I keep my distance. One to respect their owner, just because they are on public land doesn't mean the animals themselves are public property, and two, to respect the animals and their young. I am never sure if the frenzy of mooing is meant to warn the other, or warn me.
Have you ever encountered a herd of pronghorn at night? Once my wife and I were walking through a park, it was completely black, and we started hearing this weird "chuffing" sound. It turned out to be a group of pronghorn just off the path. It's actually a really intimidating sound that is difficult to pinpoint where it's coming from. I can see how it would be useful to confuse and intimidate wolves, coyotes and dogs which rely on their sense of sound to precisely locate prey.