I keep the sound turned down very low also but I'm also aware from reading the posts on the forum that I'm missing a number of animal calls. Of course, the buffalo made so much noise I had to turn it down! They mentioned that they hadn't seen buffalo since Christmas Eve so I'm thrilled that I checked in just at the right time. There was a hyena also - which I thought was an animal similar to a large weasel. The way it ran forward with it's belly low, it's long body, and the whiteness of it's fur didn't indicate hyena to me.