Get an aussie but you should understand what you are getting into before you adopt. It's easy to ruin an Aussie if you're not prepared or completely committed. Yes, they need some grooming about every 60 days. Feet, privates, hocks and ears. Wash and air dry is fine. I would try for one from 6-12 months old. Zoom and I can help you BEFORE you adopt if you're really serious. AH! I saw this "Heh, I have 3 yorkies". Ok, I would say get another breed then. Aussies LOVE to play and they play VERY VERY rough but all in good fun. Having Yorkies to play with might not be a good match for an Aussie or your Yorkies.