This vintage encyclopedia article features a description for the HEDGEHOG and includes an illustration of the hedgehog. The hedgehog has spines instead of hair, has small black eyes and short legs and is about ten inches long. It defends itself against its enemies by rolling into a ball. Here is a black and white clip art version of the illustration of the hedgehog from the article. Click on images to enlarge.
I scanned the original article from The Teachers’ and Pupils” Cyclopaedia, 1905.