The Welsh Government has worked in partnership with pet charity Blue Cross and the police in Wales to tackle dog attacks on livestock.
Mae Llywodraeth Cymru wedi gweithio ar y cyd â'r elusen anifeiliaid anwes y Groes Las a'r heddlu yng Nghymru i fynd i'r afael â chŵn sy'n ymosod ar dda byw.