It's been a while since I've posted here. So I'll do some catching up in bits and snippets. It took the dog a month from the time we got her until she could negotiate the stairs. We could have accelerated her learning but we chose to leave the upstairs as a dog-free zone for the cat's safety. During that month we kept a close eye on the interactions between the two. By the time the dog managed the stairs we had actually over done it and she was afraid of the cat. Any time the cat came into the room, the dog would leave. For a time it was so bad that if the cat came downstairs, the dog would go upstairs or vice versa. The only neutral ground was the master bedroom at night. The cat sleeps on the bed and the dog on a blanket at one end of the room. We've now gotten things on a more even keel. The two of them have finally decided that the other is mostly harmless. So all seems to be well on this front.