Hello I am a new member from Colorado. We recently rescued a female Border/Aussie (at 5 months) and she is now almost 9 months. Her weight has topped at about 31 lbs and this little girl is BRILLIANT as is true for so many BCs. We started off looking for an Aussie, we have a senior male of 12 years "Chevy" and we lost his house-mate in March. So we planned on a female aussie, and didn't realize the 'BC' part would affect the personality so. They are similar, both extremely intelligent and in need of a lot of stimulation both mentally and physically. So we rescued this little girl in April, and then another male (miniature Aussie) in May. We know *sniff that the senior probably doesn't have a ton of years left, so we wanted the two younger ones to be about the same age and grow up together so that when he passes, they will already have each other. Needless to say, training TWO rescue pups at the same time is a real challenge! Fortunately the Mini Aussie is quite mellow 'compared' to the Border/Aussie. He is happy to let her 'run' the show, but she is NOT supposed to be running OUR show and of course she tries. The BC part of this furbaby definitely makes her a different training challenge than the pure Aussie.
Our biggest issue is the vocalization. Everything else so far has been eliminated with patience and consistent training, but OMG this little girl is vocal. And her bark is SO HIGH and shrill that it just grates on your eardrums! There are certain times she goes absolutely ape-sh!t (planning to walk, anyone at the door, and when daddy leaves in the morning) but mostly she just seems to have to voice her opinion all of the time. And she has this weird 'snapping' of her teeth that she does that (we can't let HER know this) is cute, but completely inappropriate. She does it with the rescued male when they wrestle, which is nearly all the time, so she also seems to use it with dad when she doesn't like that he has corrected her physically, like moving her or saying 'no' in a really stern tone. You can actually hear her teeth come together, but she never actually bites anything, it is sort of a 'back-talk' move or something.
From what I am reading, this vocalization may be something we have to live with, but we would at LEAST like to train her to be calm when people come by. Even getting food delivery is a chore because we have to put her in her crate and she just goes on and on and on with her shrieking! We are pretty sure the Mini Aussie we rescued is autistic, but that is a whole other Oprah for an Aussie forum.