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
Dog type Dog type Dog types are broad categories of dogs based on form, function or style of work, lineage, or appearance. In contrast, modern "dog breeds" are particular breed standards, sharing a common set of heritable characteristics, determined by the kennel club that recognizes the breed. Dog types include locally-adapted forms (or "landraces") that arose undocumented over a long time. A "dog type" can be referred to broadly, as in gun dog, or more specifically, as in spaniel. Dogs raised and trained for a specific working ability rather than appearance may not closely resemble other dogs doing the same work, or