Actually, it's a beaver, so Ciel will be internally laughing and fourth wall mocking the fact that even Sebastian's artwork gets misinterpreted. Who's the artist failure now?! At any rate, it's following the Funtom Company product theme of animal mascots, and Ciel hates to break with tradition. Even if he's the one to start it in the first place.
This time, he's a bit more prepared for his guest, actually standing in the reception room instead of his office. Here, Pepper. Have a Victorian-style dressed boy to go with that ridiculously opulent environment. He's trying to sneak a slice of the raspberry chocolate torte from the side table, the one that Sebastian has forbidden him from eating before his dinner courses tonight with a 'now now, Young Master, that torte is for customers only, so do please refrain from eating it' so he'll jump back at Pepper's arrival and pretend as if there's nothing to see here, haha, what do you mean there's chocolate crumbs all over the floor?