The rabbit by Stephen O'Hanlon is another easy rabbit to do. And I found it a lot more realistic than the traditional rabbit. Love the super-long ears of these rabbits!
It takes very little time to complete - about 10 minutes or so. So I think it will also make a great kids project.
Model Details:
Model: Rabbit
Creator: Stephen O'Hanlon
Difficulty Level: Low Intermediate
Paper Ratio: Square
Paper Size: 6 inches
Model Size: 3.25 inches in height and 2.5 inches across
Diagram: Fishgoth.com
Tutorial: Youtube