Encourage your child to learn more about the way animals work with the 4D Dog Anatomy Model. Designed for ages 8 years and older, this new type of puzzle features 29 parts to put together to create the anatomy of a dog. This colorful plastic models are unique in that they show a cutaway of the animal, so you can see the outside covering of the animal on one side, but can also peer through the "cutaway" side to see the bones and internal organs. They're more than just "pretty face" models that sit on the shelf you can open them up, take them apart and put them back together again. Realistic looking with collectible quality.