What about the R.O.U.S’s? Rodents of unusual size? (Think 1987, “The Princess Bride”). Yes, they do exist. Although not rottweiler in size (like the movie), giant rats are proving just as helpful to science as canines. In Tanzania, the furry, disease-sniffing creatures are being used to detect tuberculosis in humans patients, with surprisingly positive results.
Read more about the pilot program through the non-profit organization, APOPO.