This "spitting image" thing is new to me since both my children are adopted. It was fun to hear people look for "Aunt Susie" in my kids when there was no genetic connection at all. Funny that MY side of the family connected our kids to someone there while my husband's side found similarities to their side.
But ... even this little guy's FEET look exactly like his dad's - blocky little things that would fit the shoebox probably better than the shoe - just like his dad's.