We use our family membership at the zoo fairly often. It is definitely one of our favorite family activites even in the chilly winter months. We all get bundled up and see the monkeys, lions and Sam's current fave the giraffe pirate.
About six months ago, Sam was in the Health Sciences bookstore where there is a large skeleton. I pointed to it and asked Sam, "Whats that?" He looked at it and thought about it for a minute and then his eyes lit up and he said "pirate!" He recognized the skull from the skull and crossbones pirate flag. When he saw this giraffe skeleton, it became the giraffe pirate. Now this always has to be our first stop at the zoo. It has become even more exciting than the giraffe slide.