I am trying to find a companion for my saluki greyhound lurcher. I was hoping to get a whippet which would be a perfect size, but have in fact found a georgeous 11 week old puppy that is being sold due to the owners illness. The puppy has a whippet mother and a saluki greyhound father and is around 10 inches to the shoulder now, has anyone any advice on how big he may grow as my own dog is 30 inches to the shoulder and I really don't have room for another large dog!