Bloodhounds are known for being tenacious trackers, said Brian Tierney, president of the National Police Bloodhound Association. They’re playing a key role in the search for Hardin, now in its ...

Even their drool plays a role, as that wetness wakes up scents, Heck said. Bloodhounds are known for being tenacious trackers, said Brian Tierney, president of the National Police Bloodhound ...