Sketch of the Week: Skull and blowfish

These two characters are old friends of mine:

My parents gave me the fox skull (and a few other critters) several years ago as a drawing prop; don't ask me where they got it. The blowfish was a relic from my mother's biology classroom. When she mentioned finding a few of these fellows while cleaning out the equipment closet, I insisted that she bring me one of them. Both have appeared in my work, but never together. Will they ever join forces in a finished piece? Perhaps...