The following four pictures are of the donkey skeleton. The donkey Sancho Panza rides. Even though the skeleton is the same as in the Unicorn project of the book there are several variations to be illustrated. Variation 1 - the legs of the donkey are shorter compared to the legs of a horse/unicorn. Variation 2 - the neck of the donkey is longer than the neck of the horse/unicorn. Variation 3 - the body of the donkey is longer than the body of the horse/unicorn. Variation 4 - the body of the donkey is fatter than the body of the horse/unicorn.
Again there is a picture of the skeleton of the donkey next to a six inch ruler - just to give a reference point. And another picture of the two skeletons next to each other - for comparison.
It doesn't really matter how tall/big are the skeletons/finished pieces on their own. What really matters is how big they are in relation to each other. I believe the last picture gives a pretty good idea of that.