I have noticed that when Freya is in the back yard she does something kind of odd. It's funny to me but I don't dare laugh at her as she's doing it.
When she's digging, she makes this strange whiny sound and then chases every dirt clump barking after it. I've never seen a dog do that til I got her. So I'm not sure how common it is or if it is some odd compulsion she's developed.