I have one that wandered up as a stray at about 3 months old. Someone had tossed her out. The vet said that she was very nearly if not entirely Australian Cattle dog. When she was young she was very high energy, loved to play in the water hose, would chew anything left laying if she was bored, and would chase anything that moves. Her reaction to squirrels was very much like the dog in Up. And butterflies, OMG. She jumped over our backyard fence several times in her attempts to catch butterflies. But she is also the sweetest, most affectionate dog I've ever had, aside from my Sheltie. It didn't take her any time at all to learn that indoors was the place to rest and be a lap dog, and outside was the place for play. But she is extremely intelligent. They are very observant, and will immediately pick up on who is the pushover, lol. They are hardheaded if there is something they want to do, but once they are taught, they don't forget. Mine has always been a bit shy around strangers, but never aggressive, as she went everywhere with us as a pup, and was exposed to a lot at a young age. She's also always been with cats and dogs both, and has never been a problem with any of them. As far as the horses, she didn't meet them until she was an adult, as the barn I boarded at didn't allow dogs, so she didn't meet mine until we brought them home. It only took her a couple times before she learned that the horses were off limits, as they were mine, and things that were mine were off limits. She is also extremely tolerant of kids, and if she gets tired of them, she just walks away and puts herself in her crate.
Basically, they are high energy, but once they are trained, are highly controllable. I think they are wonderful farm dogs.
ETA, mine is now 15. Here are a couple pics.
"Keep a leg on each side and your mind in the middle"
Last edited by apachiedragon; 12-21-2010 at 12:20 PM.