Hi Ginger
Thanks for the response. It is really appreciated.
I think you have a very good point there. The Lab-Elsation (Jessy) is starting to show a little bit of disregard for our authority. A lot of times, it does seem like the Lab-Rottie (Lollie) is getting egro at her for not listening to us and tries to "help" us discipline her, so I guess we need to be a bit harder on Jessy when she doesn't want to listen.
As for Lollie's Arthritis, we are currently giving her some meds that we got from the vet and it does seem to help quite a bit. Also, we are trying to keep them inside during the night as they tend to chase the neighbourhood cats at night and that doesn't do her arthritis any good. She would jump at a tree where the cat was sitting for hours while Jessy would already have lost interest, realising that the cat is gone. I guess Rotties ain't as sharp as Elsations ;D.
Thanks for the advice.
In the meantime, I would certainly see if you can get your Lab-Rottie some medication for the arthritis. If he is in pain, that in itself is going to lower his tolerance-threshold. I would get him to the vet, and fix up pain meds and/or anti-inflammatories for him, if you believe that is necessary, and his arthritis is at that level. Also you could try (if you haven't already) Glucosamine/Chondroitin, because that does help.
I am sorry you have waited a couple of days for a response. I wish I could help. I am not a 'shining light' when it comes to dog behavior. The best I can do is bump up your post, make it more visible, and hope someone will have some suggestions to help you.
These two are getting old and grumpy, aren't they? I guess their health problems make their 'fuses' shorter too. My instinct is that you are going to have to intervene as soon as you see any signs of trouble brewing....to show your dominance. But you are going to have to do this in a powerful, yet peaceful way.
The two dogs are subordinate to you. They are both pack members. You are the leader. They are 'below' you in the heirarchy. It does sound a little like they are warring for dominance one over the other. The ideal is for them both to be under your command, and nothing less will do.
I can only throw in the little I do know, and hope someone else will be able to help you more fully.
In the meantime I will try & do a little reasearch, to see if I can find any clues from that Master of Dog Behavior, Cesar Millan.....