portrait of a rottweiler dog with mouth open

adaptability animal assured background backgrounds beautiful beauty behaviour biddable black breed brown calm canine companion confident courageous cute defender defense devoted dog doggy dogs domestic domesticated eager expression eyes face fearless firm friend guard guardian hardness head intelligent looking mammal mouth natural nature nose obedient one open outdoors pedigree pedigreed pet police portrait powerful protecting pure purebred rottweiler rustic self shot steady strong teeth tongue