Giant rats trained to detect land mines and tuberculosis in Africa
13 September 2012 Last updated at 16:37 BST
Giant African pouched rats are being used in Africa to locate landmines and help diagnose tuberculosis because of their acute sense of smell.
Some of the animals - which are trained by Apopo, a nonprofit social venture - have been used to search for explosives in Mozambique, a country littered with landmines after decades of civil war.
Others are helping doctors to spot tuberculosis in patients when conventional methods of diagnosis do not work.
Hassan Mhelela reports.