I have 2 shih-poos. Spaz is 10 months and archie is 6 months.they are both about 4-5 lbs. I've been feeding them nutro max puppy, and i've noticed recently that spaz threw up a few times and both of there stool's are somtimes different. Never the runs but from solid and brown to orange and very soft. I might sound crazy but it doesn't seem that they even like it. They never worf down their food they pick at it. I talked to some lady at a petstore who was supposedly was " an expert" about food and she said it was perfectly normal the way my dogs are acting, and she thought i was nuts!! Anyway to make a long story short is nutro maybe to rich of a formula for them? Any suggestions since the dogs are very small?? Your input is very much appreciated =)