Prairie dog itself more noticeable to the predator. Predators, though, seem to have difficulty determining which prairie dog is making the call due to its "ventriloquistic" nature. Perhaps the most striking of prairie dog communications is the territorial call or "jump-yip" display of the black-tailed prairie dog. A black-tailed prairie dog will stretch the length of its body vertically and throw its forefeet into the air while making a call. A jump-yip from one prairie dog causes others nearby to do the same. Ecologists consider this rodent to be a keystone species. They are an important prey species, being the primary diet
Dog type very old types of various kinds, and would fit into multiple categories. The following are dog types and subtypes. A single type of dog may have been developed for multiple sorts of work, so there is some overlap. Broad categories are listed first, then sub-types. For a list of individual dog breeds, see List of Dog Breeds. "also see" Pastoral Dogs and Guard Dogs Note 1. Every modern dog breed has a written "Standard", that describes in detail aspects of appearance. Standards are the basis of the sport of dog showing, as each dog is compared against the ideal of