These giant African rodents are used to sniff out land mines
A Belgian NGO is doing some incredible things with rats. The non-governmental organization, Apopo is dedicated to training African Giant Pouched Rats for land mine and tuberculosis detection. The critters make for very good pets because they are easily trained. This, with their sense of smell, said to be finer than a dog’s, make them perfectly suited for the job.
One rat can evaluate 100 samples in 20 minutes, equal to what a skilled lab technician, using microscopy, can do in two days. As of 2005, the rats were able to find 5 to 10 TB patients per week that were missed by microscopes.
More importantly for sub-Saharan Africa, a heavily mined region, the rats are able to smell explosives just as easily. Here, they are used effectively to uncover land mines in these areas. Whenever they find a mine, they are rewarded with a treat. The rats are so good at the search, they’re able to clear more than 650 square feet of earth in twenty minutes. According to handling teams interviewed by The Guardian, the rats are very accurate.
In Mozambique, heavily mined during the the country’s subsequent 15-year civil war, rat teams have found and destroyed more than 13,000 mines, reclaiming more than 11 million square meters.
If you’re worried about the rats setting off the explosives, rest easy. The rats weigh less than two pounds, not enough to set off the pressure-triggered anti-personnel mines.
Training starts at four weeks old, when the rats become accustomed to humans and then desensitized to sights and sounds. They associate a clicker with a food reward and are then trained to indicate the holes that contain explosive substances by put their noses against the holes. Finally, they’re trained to wear harnesses and find inactive mines under soil. After a blind test with a real handler, the animals become full-fledged minesweepers.
The rats, once considered a pest animal, get more than just their food reward for good work. They are fed a steady, good diet of fruits and veggies and even get sunscreen to protect their ears and tails from the harsh sun.
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