1986 The Institute for Disease Control and Prevention of the Beijing Military Region conducted a study called "Investigation on Tumor of Commercial Pigs in Beijing and Other Places". Of the 450,000 pigs investigated in this study, * * * detected 12 cases, and the detection rate was 2.67/65438+ 10,000. * * Detected rhabdomyosarcoma, primary liver cancer and other diseases.
Scientists once thought that sharks would not get cancer, but according to a paper published in the Journal of Fish Diseases on 20 13, a tumor about 30cm long and wide was found in the mouth of a great white shark. So far, scientists have found tumors in at least 23 kinds of sharks.
More and more studies have confirmed that many kinds of animals are likely to get cancer, but different species have different probability of getting cancer according to their living environment or their own health level.