Wow! that's a question alot of us have asked

I couldn't recommend a certain type. as some of our babies either have sensitive stomach's or just wont eat it, So I would suggest asking your vet when you take him in for his exam. also there are sample packs of different foods at the vets sometimes at petco when they are introducing a new food. you can request one, try them and see which one that he likes and that agrees with him. Sorry I couldn't give you a better Idea, My two eat Natural choice> chicken meal, rice, & oatmeal and although they both like it and they do not have any loose stools, It might effect your little baby differently.