(CNN)Dogs and their sensitive noses are known for finding people during search and rescue efforts, sniffing out drugs and even diseases like cancer. But the powerful canine nose can also act like radar for other things that are hidden from our sight.
How conservation dogs help track endangered species
Now, they're acting like watchdogs for endangered species and assisting with conservation efforts.
Organizations like Working Dogs for Conservation train dogs to identify the scents of endangered animals and their droppings, which helps scientists track species that may be declining.