A pair with similar ferocious aspect and posture is illustrated by Warren E. Cox, The Book of Pottery and Porcelain, vol. I, New York, 1944, p. 115, pl. 31. See another pair on higher sculpted bases, but with one of the two also wrestling with a serpent, illustrated in The Tsui Museum of Art; Chinese Ceramics I, Neolithic to Liao, Hong Kong, 1993, no. 115.