"WASHINGTON -- A Twitter photo and phone tip from a resident helped animal keepers track down a red panda in a Washington neighborhood after it went missing from the Smithsonian's National Zoo."

"Rescuers of wild mustangs, checkbooks in hand, duel with the government and ‘kill buyers’ who seek horses for slaughterhouses."

"DAMASCUS, Va. -- This is a heck of a bad time for the hellbender."

A mysterious ailment is causing algal blooms and killing dolphins, manatees, and pelicans along the Indian River Lagoon, one of the most valuable and diverse ecosystems in North America.

"Fishing vessels that deploy gill nets snare and drown at least 400,000 seabirds every year, and the actual figure could be considerably higher, according to research published in the June edition of an academic journal devoted to conservation."

"The U.S. Fish and Wildlife Service announced Friday it plans to stop protecting the gray wolf and put the states in charge of managing these predators. But the plan is already facing some tough opposition from wolf advocate groups that say it’s too early for this discussion. EarthFix reporter Aaron Kunz explains."

"The great migration began perhaps 40 years ago. From strongholds in the Rocky Mountains and Texas, young males headed east, seeking female companionship and new places to settle."

"Migration used to be a good strategy for animals to find the best food, but a recent study appears to show that climate change and human interference favor animals that stay put."

"WASHINGTON -- The exact location of the anti-poaching operation is secret, as is the number of rangers who will be on duty. Also confidential: where the drones will fly as they search out poachers intent on slaying rhinos for their horns – one killed every 11 hours in South Africa alone."