Sumatran rhinoceros becomes extinct in Malaysia after last of the species in the country dies of cancer
Iman, aged 25, died six months after the country's last remaining male rhino
The 2.000-year-long search for the Loch Ness Monster
The scientific search for the mythical monster has revealed some surprising facts about its home in the Scottish Highlands
The Tasmanian Tiger is thought to have gone extinct in 1936, but mysterious sightings might suggest otherwise
The last wild Tasmanian tiger was thought to have been hunted to extinction