Personally, no I haven't. They get along really well, sometimes they will squabble over toys but nothing that ever gets out of hand without a quick "NO". They live together with a third female, my older Rottie Vallejo. I do know from reading around here that this is not the norm, but I...
Cuddles and Toots are WAY to big now to get in bed with me and the wife. They sleep on there doggie beds by our side. Plus we got the doggie door installed now and they just go out when they need to potty, no waking dad necessary!
LOL, cardboard boxes are on my two's list also. Cuddles is scared of empty trash cans on our walks, they don't bother Toots too much. And Cuddles is also scared when we get the Nintendo Wii out and play Wii bowling, she thinks we're going to smack her with the controller or something!
When I give Cuddles a treat she usually prances around with it in her mouth, drops it and gives it a couple for jackhammers, then sproings strait up, all 4 feet at the same time! It's freaking hysterical!
Well, Toots got so bad I had to take her into the vet on Sat. Antibiotics, steroids and some form of doggie antihistamine (can't remember the name) for her for 2 weeks. She looks and feels SO much better after just 2 days.