I just 'rescued' an eldery (14 year old) dog from a family member. Don't want to get into the story. She is a chow/terrier mix. She is 17 inches tall and weighs 21 pounds. She is emaciated. I can't find a height to weight chart for dogs. What should she weigh?? She's eating like a horse, so I want to know where I should get her to. I'm guessing she needs another 9 pounds or so? Here she is...the spot you see is a wound I found on her that might be a carcinoma.