I've been losing my sleep as I was trying to create a picture dictionary in a powerpoint format with animals' names and pictures.. as I was starting to lose my patience (because the list of animals my students had so eagerly provided was getting bigger and bigger - and it would approach infinity if I didn't prepair something immediately) I found two sites which have exactly what I was looking for! Enjoy!
http://eflnet.com/vocab/animal_vocabulary.php
http://esl-kids.com/flashcards/animals.html