Ahhh this is good to know! I've been wondering about Dolly because her puppy coat seems to be semi-cottony and mattes and tangles so easily! Brushing has become one of her least favorite activities because of this.
Olivia had straight hair as a pup, beautiful hair. She's now super cottony and mats like crazy. For some reason she super matted right now and won't allow me to brush her - understandably. I'm gonna have to keep her body short but tail and face longer, I guess. The hair on her tail and face have never changed, but her body did.