The K-9 unit in the police department is one of the most essential units thanks mainly to their enhanced sense of sight, smell, and sound.  For instance, dogs have about 45 times more scent receptors in their noses compared to humans. This keen sense of smell has been known to come in handy in a vast range of cases where so much is at stake. This unit has been known for leading to breakthroughs in major cases, saving lives, helping to catch criminals, as well as serving as a loyal companion to their handlers. The K-9 unit also serves a …