This is not an outline of Spike, but it IS a snapping turtle you can color. To make this common snapping turtle picture look like Spike, you would have to add longer, definitive spikes on the neck and head, as well as make the head larger and the nose more pointed.
At our annual Snapper Day, Spike is always a live snapping turtle star, and we hand out these free snapping turtle coloring sheets—as well as Spike stickers!
Coloring books for adults can be found online filled with only turtles to color.
Thanks for celebrating National Coloring Day with us in a turtle way! Thanks as always for reading, too.