The below "Learning Activities" are great for classification of animals!
Three new "Learning Activities" from Quia
a. Quia quiz
http://www.quia.com/quiz/277724.html
b. Quia activity
http://www.quia.com/cz/9119.html
c. Quia pop up quiz
http://www.quia.com/pop/36136.html
1. Animal Classification information
http://www.sheppardsoftware.com/content/animals/kidscorner/classification/kc_class_again.htm
2. Animal pages (mammals, birds, reptiles, etc.)
http://www.sheppardsoftware.com/web_games_trivia_animal.htm
3. Play Classification Game
http://www.sheppardsoftware.com/content/animals/kidscorner/games/animalclassgame.htm
4. Identifying Animals game
http://www.sheppardsoftware.com/content/animals/kidscorner/kidscorner_games.htm