Think about twins and you’re likely to consider all the ways they’re the same. Their hair, their eyes, their shoe size...maybe even their laugh. It makes sense; these built-in BFFs are together from the start. And though twins can often seem like a package deal, what you probably don’t give too much thought to is all the ways they’re different. Because yes, even with the same DNA , these sibling look-a-likes, like everyone else, have their own idiosyncrasies.