rottweiler running in grass

action active adaptable alert animal athletic attentive big black breed bright brown canine canis companion confident cooperative courageous defender detail devoted dog domestic energetic eventempered exercise familiaris fearless frolicking gait gaze german grass guard herder individual intelligent intent large looking lupus mammal markings mouth muscular nature obedient observant one open outdoors outgoing panting pedigree pet physical playful powerful protective purebred romp rottweiler running security selfassured service sharp social spirited stocky stride strong territorial tongue trainable trotter watchdog worker