Includes many different animals that can be found in a zoo and how a zoo works.  For preschool to grade 1.

Books
Dear Zoo by Rod Campbell
If Anything Ever Goes Wrong at the Zoo by Mary Jean Hendrick
Polar Bear Polar Bear by Bill Martin
Put Me in the Zoo by Robert Lopshire
Safari by Robert Bateman
The Great Escape from the City Zoo by Tohby Riddle
Zoo by Gail Gibbons
Working at a Zoo by Bertram T. Knight

Realia
Animal Match-up game
Endangered animals floor puzzle
Lacing zoo
6 plastic zoo animals
4 rainforest finger puppets
4 wildlife finger puppets
Zoo stencil
Tactile Animal Puzzle
Animal Puzzle w/ sounds
Wildlife Puzzle

Magazines
ZooBooks: Pandas
ZooBooks: Wolves
ZooBooks: Lions
ZooBooks: Ducks
ZooBooks: Hippos

Audio
Bobby Susser Songs: Animals at the Zoo

Video
The Happy Lion
At the Zoo Sing-along