Tucson, Arizona is one of the fastest growing metropolitan areas in the southwest. Tucson's rapid growth over the past ten years reflects a tremendous (51%) increase in population. The increasing urbanization of Pima County has affected animal control philosophies and the policies of the Pima Animal Control Center.
Ruff, Arthur J., "Animal Control in Pima County and Tucson, Arizona" (1985). Management and Control of Companion Animal Populations. 2.