http://kids.sandiegozoo.org/animals/mammals
http://kids.nationalgeographic.com/animals/hubs/mammals/
http://www.kidzone.ws/animals/mammals.htm
https://www.youtube.com/watch?v=zqsK0VhcL8o
REPTILES
http://kids.nationalgeographic.com/animals/hubs/reptiles/
http://www.sciencekids.co.nz/sciencefacts/animals/reptile.html
http://www.kidzone.ws/animals/reptiles1.htm
http://www.sheppardsoftware.com/content/animals/kidscorner/classification/kc_classification_reptiles.htm
http://study.com/academy/lesson/reptiles-lesson-for-kids-definition-characteristics-facts.html
http://sciencewithkids.com/science-facts/facts-about-reptiles.html
BIRDS
http://kids.sandiegozoo.org/animals/birds
http://kids.nationalgeographic.com/animals/hubs/birds/
http://www.ducksters.com/animals/birds.php
http://www.sciencekids.co.nz/sciencefacts/animals/bird.html
http://www.sheppardsoftware.com/content/animals/kidscorner/classification/kc_classification_birds.htm
AMPHIBIANS
http://www.ducksters.com/animals/amphibians.php
http://kids.nationalgeographic.com/animals/hubs/amphibians/
http://www.sheppardsoftware.com/content/animals/kidscorner/classification/kc_classification_amphibians.htm
http://sciencewithkids.com/science-facts/amphibian-facts-for-kids.html
http://www.biology4kids.com/files/vert_amphibian.html
FISH