Volunteer group helps sniff out missing, lost
Ivan is a 144 pound Caucasian Ovcharka, the only one of his breed in the world used in search and rescue.
Gunner, a chocolate lab, has found human bones under 90 feet of water.
Ollie is a mixed breed found on the street of Tunica.
All three are canine partners in Search Dogs South, a nonprofit comprised of volunteers who work with dogs to locate lost or missing persons.
Handler and dog may train for one to two years to learn to work together.