Interesting article, thanks for posting. Our hybrid only does it occasionally so hopefully it's not too late to break him of it. The causes mentioned in the article do not, for the most part, apply to us (woops, to him) so ![I Dunno... :dunno:](https://board.marlincrawler.com/Smileys/marlin/dunno.gif)
I thought the article was interesting, since you have a hybrid.
Edit: if I could have a hybrid, a Doberman and a Border Collie...I would be happy as a pig in ****. I'd be tired, but it would be a hoot!