The police canine serves as a psychological deterrent to criminal behavior. Dogs can search large areas and buildings in a relatively short period, and they afford additional protection for the police officers. Moreover, the police canine can accurately detect narcotics and the presence of explosives. Primary disadvantages of using police dogs are mandatory training commitments, quality of the canine, insufficient funding, consequences of dog bites, problems keeping patrol vehicles, clean and unexpected death or retirement of the dog. Chapter notes, illustrations, and about 60 references are supplied. A donor release agreement form and a police agency's canine selection process are appended.