Breeds
What kind of dogs typically join a K9 unit? Most commonly, you’ll see a German Shepherd, chosen for “its intelligence, strength and loyalty and great sense of hearing and smell.” Other common breeds include Labrador Retrievers, Doberman Pinschers, and Bloodhounds.
Citation: https://golawenforcement.com/articles/what-is-k-9-unit-how-to-become-a-police-dog-handler/