If you're looking for some interactive educational entertainment, try Build Your Wild Self, a site sponsored by the New York Zoos and Aquariums. There is plenty to explore. I just had some fun making this character, but have yet to create animal characters. There is also information to explore about the zoos and aquarium.
Whatever age you are, you will find something on this site. Explore, but come back and post a comment to let us know what you think.