The teeth clicking you are describing is actually a very common behavior among dogs when they're showing excitement. Greyhound people like to call it "chattering" As for her showing more physical expressions than other dogs, it could just be that you're more in tune with Aewin and you're more knowledgable about dog behavior than you were before. Most dog owners are content to look at the basics: ears (are they pushed backwards or forwards?), eyes (are they intently focused on an object?), and the position of the tail. It seems that you, on the other hand, are more in tune with the inner workings of Aewin. Because of this, it might seem as if Aewin displays more body language and facial expressions.

Speaking of behavior and physical expressions, I'm pretty sure there are behavioral differences between dogs and wolves although I wouldn't be the right person to ask. At any rate, Aewin IS quite gorgeous and she does look very wolf-like!