Tinkerbell thinks my Biewer is a big squeaky toy, I think because of her coloring (the Biewer's). She did some ear tugs and nipping, then I looked up and Tink was trying to drag the Biewer across the room!
That's when I intervened... but my Tink has an excitability problem. I have to stop her play occassionally whether it's with humans or other dogs... she just gets totally wound up and her behavior can escalate to red zone aggressiveness in an instant (or used to anyway). She's good as long as I stop her, and I've been teaching her 'easy' and 'be nice' so she has recovered her bite inhibition, for the most part.
Actually, my Biewer is smart... when Tink gets too much for her, she beelines for me and wants me to pick her up and save her! Too funny! But it works, then Tink calms down and I allow the play to continue. She'll head for me too whenever I say 'What are you doing???'
Occassionally I do have to separate them manually.... barks and growls get misinterpreted and they end up fighting, but it all blows over in no time. I do watch them all the time... if I can't see them, I am listening for the few seconds I step out of the room.
They both joined our family at age 2, but 8 months apart. They are about the same size and weight, so I think that helps. My 2 smaller Yorkies just stay out of their way, unless I am on the floor with all of them.
One thing I don't understand... if I hand out treats, they will all sit in a semicircle in front of me, and they wait their turn. No stealing or arguments ever over food. I don't get that. Other breeds I've owned have always been mildly food aggressive, to people and other pets... IDK!
