My DD is 17 months old. She is breastfed and eats solids. She's been eating solids for many months now. Our neighbor's son is 6 months old. He is not breastfed and has been eating solids for about 2 months, I think. We witnessed a diaper change yesterday and his poops looked much more like adult poop than my daughter's does. Her poop is still fairly loose and runny, definitely not solid-looking "adult" poops. Is this the difference between breast and formula? Should I be concerned? Before I go running to the pedi I am looking for some advice. Thanks!