I noticed my sister giving my 16 month old niece skim milk. I know she is not my kid, but this child is extremely skinny (she doesn't weigh 20 pounds yet.) I have four kids of my own and they were all on whole milk until 2ish. I would just like to know your opinions of whole milk and babies/toddlers. I don't know how to approach this either, for fear that she will fly off the handle at me.