An ox head 

This detailed drawing of an ox head, created by Dutch Golden Age artist Paulus Potter, showcases his mastery of animal anatomy and realism. Executed in black chalk, red chalk, and white lead on paper, the drawing captures the ox's musculature, textured fur, and expressive features with striking accuracy. This study, housed in the Städel Museum, likely served as preparation for one of Potter's larger paintings, demonstrating his commitment to meticulous observation and the artistic exploration of natural forms.