Wow I'd never heard a Toller scream before. It was actually kind of creepy.

Ooh forgot to mention also Aussies are very vocal too... but (thankfully) my two are pretty quiet. Charlie has NEVER been a barker, Jamie is one to bark when she hears someone unfamiliar at the door, or someone is at the door she does not know (it's odd, too, she doesn't have to see them or hear them, if it is a friend of ours' she is fine even if she has never met them before, but say someone like the mailman or someone knocked she barks. It happens usually when we are asleep in the morning too if someone knocks, maybe because she knows we are not awake and alert in case something goes wrong?). there are times when they do get excited, like when their dad comes home from work, she'll start barking and then Charlie will start barking and there is no shutting them up until Dad gives them his full undivided attention and lots of belly rubs

So this is a big *knock on wood* for me, but my two are relatively quiet for Aussies, anyway.