Prairie dog and Clark in 1804. Lewis described it in more detail in 1806, calling it the "barking squirrel". On average, these stout-bodied rodents will grow to be between long, including the short tail, and weigh between . Sexual dimorphism in body mass in the prairie dog varies 105 to 136% between the sexes. Among the species, black-tailed prairie dogs tend to be the least sexually dimorphic, and white-tailed prairie dogs tend to be the most sexually dimorphic. Sexual dimorphism peaks during weaning, when the females lose weight and the males start eating more, and is at its lowest when the females
Portrait of a Man, probably a Member of the Van Beresteyn Family in a line with the elbow, "RH L van Ryn 1632 " ; canvas, 44 1/2 inches by 35 1/2 inches. Mentioned by Dutuit, p. 53 ; Michel, p. 119 [91, 443] ; Moes, 512. In the collection of the Beresteyn family, Chateau Maurik, Vucht, 1884. In the collection of the late H. O. Havemeyer, New York." The painting was included in most Rembrandt catalogs of the 20th-century along with its pendant, "Portrait of a Woman, probably a Member of the Van Beresteyn Family", which has recently been disputed as autograph. The pendant is, however, still connected with Rembrandt's workshop