Our favorite part was seeing the baby chicks hatching and running around. They were really cute! We also saw a baby exhibit that shows the development of a baby in the womb at different weeks. We found the baby for weeks 12-14 (the size our baby is right now) and the kids were surprised at how big he/she already is. It was really interesting! We're planning on going back sometime since we didn't even see half of what was there.