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.
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.