Ubude bomzimba we-Rottweilers bukhulu kancane kunobude babo, obuhluka kusuka ku-55 cm kwabesifazane abancane kuya ku-70 cm kwabesilisa abakhulu. Isisindo sabo sisuka ku-36 kuya ku-54 kg.
I-Rottweiler iyinja enzima enekhanda elikhulu, eziqinile, namadlebe ashona kancane. Unomlomo wesikwele oqinile, kodwa ngenxa yezindebe zakhe ezilengayo (amaphiko), ngezinye izikhathi uyaconsa. I-Rottweiler kufanele ibe mnyama ngaso sonke isikhathi futhi ibe namabala abomvu ngokunsundu. Ijazi elifanelekile lifushane, liminyene, futhi limaholoholo kancane. Kwesinye isikhathi imidlwane "ehluthukayo" ivela kudoti, kepha ayivunyelwe ukubamba iqhaza emibukisweni. Imisila idojwa maduze nje, ifike ku-vertebrae eyodwa noma amabili e-caudal.
Ama-Rottweiler avuthwa kancane, okuyinto evamile ezinhlotsheni ezinkulu. Abaningi bafinyelela ukukhula okuphelele kwabantu abadala kuphela ngeminyaka engu-2-3 ubudala, nakuba lokhu kuvame ukwenzeka ngonyaka wokuqala. Izinja ezinjalo zisazoba nesikhathi sokukhuluphala futhi ziqondise isifuba futhi ekugcineni zibe yilezo zinja ezinkulu esijwayele ukuzibona.