The Zoo had a “Behind The Scenes” day. We went only to check out the train area (it was rainy and most of the others we see through zoo classes). Alex was in heaven. He got to climb in/on/around all the engines and cars. We saw where the trains are stored, maintained, and painted. Teague knew enough to say “choo choo” over and over. He only wanted in one particular train and the rest he vehemently fought against getting in.