For a child, there are few places more exciting than a zoo. Perhaps it’s the idea that an animal that you’ve only seen in books is right there, behind the glass. Or maybe it’s the enchantment of seeing these animals up close, to see the texture in their fur, to hear their sounds in first person, or to look one square in the eye and have it look back. Or maybe it’s just the anticipation of waiting to see if one will actually go to the bathroom while you’re there watching it. Whatever it is, the zoo is pure magic for children. And unfortunately, it’s pure sweat for parents. When my children first caught wind of our potential zoo trip, I was constantly barraged with questions. “How many more days to the zoo?” “When are we going to the zoo?” “Is the zoo today?” And, as usual, when dealing with small people with no concept of time, every answer you give is a real waste of breath. But finally, after a few agonizing days, it was time to go to the zoo. I knew it was the perfect day because th...