The cattle dog smile is why my previous red girl got called(amongst her other nicknames) "Susie Smiley-face". Love my smiley dogs.
The other thing the breed has become renowned for, in the States particularly, is the cattle dog shriek. Thankfully I've only ever had one that did it, but she did it well.
She'd wait till you were walking past her yard, then leap to shoulder height so she could shriek in your ear.
The first time she did it she was in one of the back yards and I went tearing around to rescue her seeing I was convinced she must have had a leg trapped in the wire for sure.LOL.