In nature, numerous animals share characteristics with humans, such as pigeons, its ability to find ways still remains for human use. However, a recent study makes people aware it’s more than that.
Richard Levenson, pathologists from the United States together with Edward Wasserman, psychologist from Edward Wasserman, trained pigeons to identify cancer.
Source: http://www.creativebiomart.net/blog/pigeons-that-can-distinguish-cancer-image/