sniffer dog.
The Okefenokee Swamp. Flickr/petitshoo What do you do if you're a wildlife biologist trying to track an elusive snake inside a vast swamp? You call in the dogs. Researchers in Georgia's Okefenokee National Wildlife Refuge recently employed a dog named C.J. to help sniff out threatened indigo snakes inside the refuge, the (Georgia) Cherokee Tribune reported. Reaching seven feet in length, indigo snakes are the longest snakes in North America, according to the University of Georgia. Once common in the southern U.S., the snakes have become threatened with extinction due to habitat loss. Refuge scientists knew that the slippery black snakes make their homes in the swamps of Okefenokee, but ...