I don't have a clue as to how to attack this problem with Winnie. She is super-territorial, but in a strange way.
For example, if we're out in the backyard and our landlord or the tenants behind us come through, she become very aggressive: hackles go up, barking, snarling, even snapping at people she's known since she was a puppy. But, if they're out there when we take then out - no problem. She's sweet as pie.
Same thing at the vet. Whatever dogs or cats are in the waiting room when we arrive are cool, no problems with those, but any dog or cat or person who comes through that door is a threat to her territory and I get the same aggressive behavior.
Now, when she becomes aggressive, Will or I ends up having to hold her - on the ground, we don't lift her up to foster a position of power, trying to put her in a submission posture - until the person leaves. And it's a struggle. Often, we end up just taking her inside.
Any suggestions on how to combat this? We've had some close calls where she's nearly bit people, and I don't want that happening.