Two cats curled asleep

Perhaps I got a bit too caught up in the detail of this piece, but alas the subjects are a bit difficult to discern at first glance. This is a pen and marker drawing I did a couple years ago-there are two cat sleeping anti-parallel, the one on top seems to serve as the pillow for the one below. Perhaps next time I'll use more shades to make it easy to differentiate, but at the same time I kind of like that one has to work to separate the feline companions :3