When I was about five, I saw a pink poodle. I asked the owners how they got it pink, and the reply was "Food coloring!"

We had a white cat at the time. I thought she'd look great with colored spots. In the cupboard was a little set of the squeezy-plastic food coloring bottles.

Since the cat was half-asleep and wouldn't sit up or make a kittyloaf for me, I could only do one side.

One side was more than enough, according to my mom, who got stuck with the task of giving the poor kitty a bath (and even after the bath the cat still had hazy blobs of pastel colors on one side).

So: given Crayola markers and an obliging dog? I'd totally draw on him, too.