Kristen Rajczak Nelson 
Rescue Dogs [PDF ebook] 

A dog’s great sense of smell can be very helpful. It can even help find missing people. This colorful and engaging book presents the incredible efforts that rescue dogs make to find people in the water, snow, or even the rubble of destroyed buildings. Detailed photographs show these heroic dogs in action, from their training to their work with search-and-rescue teams around the world.