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.
South Africa's Supreme Court of Appeal has dismissed a government bid to retain a ban on domestic trade in rhino horns, breeders and officials said Monday, in a dispute over how to end poaching.
The rare birth of a Sumatran rhino in Indonesia has been hailed a victory for the critically endangered species, which has been almost wiped out in the wild by poaching and habitat destruction.
A Sumatran rhinoceros has given birth at an Indonesian sanctuary in a success for efforts to save the critically endangered species.