It is the animal that due to flaws in its development can't correct testicular descent ( extrasomitico descent from the abdominal and pelvic cavity into the bags excrotales ) there are ligaments that drag the testiculo to its correct location, and sometimes does not decline, caused by problems in these ligaments. the solution is an operation where the 40 ligament is cut, mainly the Gubernaculum ligament of Testus ) Drag the testiculo to its correct location.