It’s time for a nice, calm day at the zoo. Wait a minute--where are the customers? Someone has shut the entrance gate, and no one can get in! Let me just get my key out and I’ll open the gate… oh no! I’ve lost my key. Now we are really in trouble! Can you help me find my key so we can open the gate and let the customers in?! But don’t forget to keep taking care of the animals. We have to keep this zoo running!