I have fed my two small dogs successfully on Iams for 3 years. My Yorkies health improved enormously when I changed him to it. As I am soon collecting a 5 year old boxer my thoughts are to changing to something a little cheaper. Is there anything similar I can feed them on without upsetting the Yorkies tum.
Feed the Yorkie what suits him, and the Boxer whatever suits him best. Many people with more than one dog find they need to feed two separate diets. :)