With over 300 million scent receptors, the Bloodhound has the best sense of smell of any dog. They can track scents for days that are weeks old.
Beagles have 220 million scent receptors. Their keen nose makes them great at sniffing out contraband
Basset Hounds are known for their droopy eyes and ears, but they also have an excellent sense of smell.
Coonhounds like the Black and Tan Coonhound have a superb sense of smell.
Friendly Labrador Retrievers put their sharp sense of smell to work finding game for hunters, tracking scents
German Shepherds are intelligent working dogs who use their keen sense of smell for search and rescue
Though not obvious, Bulldogs have an excellent sense of smell that makes them successful in K9 police work and competitive nosework.