Pali mitundu yambiri ya agalu padziko lapansi. Mmodzi wa iwo ndi Rottweiler. Galu wamkulu, wokhwima, wamkulu yemwe angakhale bwenzi ndi bwenzi komanso mlonda ndi mtetezi.
Galu wa Rottweiler ndi wa agalu akuluakulu. Ali ndi thupi lamphamvu ndi minofu yamphamvu. Pa nthawi yomweyo, iye ndi wokhulupirika kwambiri ndi wanzeru, ndithu wodekha ndi analeredwa bwino.