This image actually created a bit of a headache for me because I wanted the zebra to be slightly more cartoon-like. I was one of those little girls who drew horses everywhere, my notebooks from school have unicorns and beasties all over the back covers and my homework diary looks more like a sketchbook. Looking back it has always been obvious what I would become! Anyway, due to my horse obsession I have a strong sense of the proportion of all horse-like animals and find it difficult to draw them inaccurately.
By the way, I happen to know the answer to this question. New scientific research has confirmed that zebras are in fact white with black stripes. So there you go.