two dog puppies playing and fighting in snow

act aggression agressive alarm alert angry animal ball behavior big bit bite black body bowl brown calming comply danger distress doberman dog dogs down fall fight focus forewarn friendly friends friendship game german gladly growling harassment hazard head hug joy jump knock knuckle lawn lick lie little look menace nature over overthrow play puppies puppy quarrel run several sheepdog shepherd show small snarling snow subdue subordinate team teeth threat threaten together tongue tooth toy troll two warn white winter