dogs playing, one black one tan

active animal animals black bred breed cagey caginess canids canines canis careful carnivore caution cautious distrust distrustful dog dogs domestic domesticated doubtful each familiaris fun genus guard hound hounds leery life lupus mammal mammals match mistrustful natural nature one other play playground playing sizing skeptical species suspicious tan territorial two vigilance vigilant wary watchful wrestling standoff stand off circle the wagons circling circles pet boarding kennels pets kennel