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
Prairie dog former, the males tend to be related, while in the latter, they tend not to be related. Two to three groups of females may be controlled by one male. However, among these female groups, there are no friendly relations. The average prairie dog territory takes up 0.05–1.01 hectares. Territories have well-established borders that coincide with physical barriers such as rocks and trees. The resident male of a territory defends it and antagonistic behavior will occur between two males of different families to defend their territories. These interactions may happen 20 times per day and last five minutes. When two prairie