I have a 2.5 year old spayed bernedoodle who suddenly started chewing up paper she finds when home alone. She's only ever chewed up something once when she was a puppy, but hasn't done it since. She has had free roam of the house when alone since about 10 months old and never had a problem (even when we go to work for the entire day). She suddenly has started chewing up paper when she's even left alone for only a hour. Nothing has changed at home...no new routines, sounds, schedule changes, etc. The only difference is my wife just found out she's pregnant, but we haven't been acting any differently and it's still very early on. We ordered some interactive toys and treats to help entertain her and have tried taking her on more walks than normal, but nothing has helped so far. Any ideas what's causing the change or what else we should do?