Quote Originally Posted by Rachel View Post
My thoughts are that you seemed to have instinctively handled the situation correctly. Joey needed to know that this type of behavior was unacceptable and would not be tolerated by you, the *Top Dog*.
Exactly. This sounds like a classic case of resource guarding. In his mind, YOU are his resource. You need to switch the roles and enforce your own benevolent leadership!

I own both small and big dogs, and I don't treat any of them differently. If I tell you Sit, you better sit. I don't care what your size is

In your case, you'd do best enforcing NILIF now and paying a little more attention to how you treat Joey and Dora. Are you paying significantly more attention to Dora than Joey? Joey can be feeling slighted with the new addition, but if you enforce NILIF, Joey should not feel slighted because they then BOTH have to earn your attention. It is not something that he can just take and guard. It is something he has to earn. Do not let toys and treats lay around your house for now. For now, you are the controller of all resources and you will only dole them out when you can supervise.

Don't worry. It is the hardest going from a single dog household to a two-dog household. After the second one, it's pretty smooth sailing from there

A good booklet is: How to be Leader of the Pack and have Your Dog Love You For It by Patricia McConnell