Another factor is how much time they can be together. Keeping them apart all day and letting them interact for a few minutes after the work day will only last so long.

The second is like Jack said with Stormbringer, some dogs just have no social skills. Life is about the family business, and the family business is about killing shit. Mims Ch. Charlie would kill anything he came in contact with, big or little, male or female, sick or healthy

Ch. Angel has multiple box RIP's but could be taken off the chain and she would run the woods and river with two Australian Shepherds, and would do the play fight with them like dogs do. I waited for ten years for the horror story about the Australian Shepherds but it never happened.

The best chances would be to start them early and maximize the amount of time for each interaction.

And always be within helping distance when one of the dogs decides on another plan. EWO