hello, I live with my family of 5 in a big New York city apartment. We are looking into getting a dog and I have been throughly researching Aussies. clearly, the standards and minis are too big for nyc. I have been looking into the toys and teacups. I have read that Aussies are extremely active breeds. just how active are they? I contacted a seller who said that the smaller the dog, the less exercise they need but that doesn't seem true. is she right? she also said that other owners walk the dogs 1 to 3 times a day. is this ok? how long and frequent should the walks be? are they easily bored? how do they fare on planes?