I hope you all remember me. I had the little 5 week old chihuahua Bella who passed away on my birthday on Aug. 8. Well , I adopted another little pup yesterday who was scheduled to be put down today. He is 7 weeks old, he is an all black dog 1/2 lab, 1/4 chow, and 1/4 aulstralian shepherd. He is so beautiful, sweet, and calm but he is a little chunky. It isn't extremely bad but what kind of dog food can I feed him that won't put too much weight on him?