M13 was the 13th male from that group to be born in the wild.

CNN: Switzerland's only wild bear is killed as a danger to humans

"The individuals born in the late 1980s and early 1990s should survive in the wild, since the Yangtze river system is large and it has some complicated habitats where the paddlefish could hide, " he says.

BBC: Earth News - Giant fish 'verges on extinction'

Half of the chimpanzees were wild-born, whilst half were reared in the orphanage.

BBC: Chimpanzee grooming is a 'postcode lottery'

When the Wild Irish brand was born in 1954, then-chairman Marvin Sands named it for his young son.

FORBES: Up From the Gutter

Over the last seven years 33 black rhinos have been born in the foundation's parks and members of the critically endangered species have been returned to the wild.

BBC: Black rhino threat: Poachers target Kent wildlife parks

To reach their conclusion, Dr Rich and Dr Wolfe studied the DNA sequences of malarial parasites collected from nearly 100 wild or formerly wild chimpanzees born in central and west Africa.

ECONOMIST: Human malaria started in chimpanzees

In his new book, Born On A Mountaintop: On The Road with Davy Crockett and the Ghosts of the Wild Frontier, author Bob Thompson follows in the footsteps of the famous frontiersman in a quest to answer the question, why has the legend of Davy Crockett endured?

BBC: Magazine