It's hard to believe they are totally and completely brothers. They look nothing alike. They act nothing alike. They have taken their own timing for every milestone.
One has Mommy's fair skin, the other will tan like his daddy. One has his mother's obsessive, perfectionist failings. The other goes with the flow like his father.
Me: Caleb, who do you look like?
Me: Who do you act like?
Me: Who does Ben look like?
Caleb: Baby Benjamin!
3 out of 3. Not bad.
I'm off to study my children because they have the same parents but are nothing alike.