translation.en: Ten percent of the species actually make a ball, and this ball they roll away from the dung source, usually bury it at a remote place away from the dung source, and they have a very particular behavior by which they are able to roll their balls.
translation.zh: 大约10%的种类会把便便裹成一个球， 然后把这个粪球滚到别的地方去， 经常会离发现便便的地方远一点。 而它们在滚粪球这件事情上 真的有一些独门绝技。