This is actually a 'portrait' of my two pet rats. A personificated portrait, obviously, they're supposed to represent Foelie (Abbreviation of Kamperfoelie, which means Honeysuckle), she's the dark one, and Mar (Abbreviation of Marmer, which means Marble), she's the tiny grey one.
Foelie is quite a surly rat, a bit bitey and reserved and tends to treat Mar a little harsh, but deep down she's mostly insecure and actually likes Mar's company. Mar, on the other hand, is pretty much the opposite: curious, playful, very social and sometimes kind of brainless. I've tried to capture their personalities in this drawing, and I still think they look like them.

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Tl;dr: I have rats. These are said rats.