The concept of exploring visual similarities between human faces and various creatures was a theme that Thomas Rowlandson returned to frequently. The faces are often grotesque in nature, and matched with monstrous, ugly creatures, such as lizards and, in the case of these two works, fish, and dogs or wolves. Rowlandson’s interest in physiognomy was shared by some of his contemporaries, and could be used to imply personality or moral standard of the subject.