Yup, Eva's right. When I first had them, I pretty much went off the patterns of white on their front paws, as each gerbil has their own individual pattern. Of course, now Nightshade is separated, so it's obvious who she is. Twilight is much bigger than Ebony, who is the runt, plus Ebony is a lot more sprightly and bold in personality.

The gerbils, and Flossie of course, send kisses!