["I felt very happy last night when my new dog was running around playing, I didn't think she knew how.", "Yeah, dogs have to learn how to play.  Kinda funny you don't always consider that.", 'I do, but she was really abused before and was so docile and quiet..some never do learn normal animal behavior..I have rehabilitated many.']
It depends on how young they are.  I have a rescue that was abused but she was real young.  She snapped out of it.
I felt very happy last night when my new dog was running around playing. I didn't think she knew how to play and would always be stuck to my leg and worried.