More than 400 animals including rhinos, elephants, anteaters, polar bears, lions that are separated by where the animals are from: African, Asian, and South American regions. My husband loves to sit and read in the walk through aviary. They have classes, programs, and camps, and holiday activities. At Halloween they string up light and have a scary and not scary side and have local businesses give out candy. During the Christmas season, they have the Festival of Lights, which is one of my favorite Tucson things to do. They have lights strung from every corner of the zoo and they have people giving out presents and live entertainment. Great zoo to do in a couple hours before the kids get tired and grumpy.