KatyzMama, have you been able to locate some help with Katy's change in behavior? If yes, I am curious to what you've found out. I am wondering if there may be a need to work with a qualified trainer on a one-on-one basis (vs. with other dogs) at first, if more activity time is needed by Katy (I know my aussie needs lots of active time or he can get a little cranky), and/or if changes in behavior can sometimes take place after having puppies.