Rhinos signal gender, age, and sexual availability in their poo, said a study Wednesday which suggested mammals may use communal dung heaps as social networking sites.
Deep from within the Indonesian jungle a solitary, seldom seen forest giant emerges from the undergrowth.
Vietnamese authorities have destroyed more than 2 tons of confiscated elephant ivory and rhino horns, sending a message ahead of an international conference that they want the wildlife trade stopped.
South Africa's all-female "Black Mambas" anti-poaching team had never lost a rhino since they were formed in 2013, but the killing of two animals earlier this month shattered their proud record.
Rhino horns worth around $1 million were to be burned on Thursday at the San Diego Zoo in a bid to raise awareness about the endangered species decimated by poachers.
A one-horned rhino has died weeks after it was shot by poachers in Nepal, becoming the first of the rare animals to be killed in the country in over two years.
As night falls over the lush plains of India's Kaziranga national park, a small group of lightly armed forest guards sets out on foot to protect the world's largest population of one-horned rhinos.
Conservationists at the University of Kent have used game theory to look at the likely outcome of the battle between rhino poachers and the gamekeeper or rhino manager.
Sedated, blindfolded, her ears plugged with cotton-wool, "Hope" the rhino breathes heavily as veterinarians work to repair a gaping wound left by poachers who hacked off her horns.
The Namibian government on Friday called for bids from trophy hunters to kill three endangered black rhinos, despite fierce global criticism over previous auctions.