So is the collar the deciding factor.? Is it legal to kill an un collared dog but not one with a collar? I have let collared dogs walk and even tried to find where they lived to inform the owner. Last week I meet 2 un collared dogs in the road on my way in. They stood their ground barking then came closer to me. I had them lined up for a 2 fer and just as i clicked the safety they suddenly busted out of there running wide open. They never slowed down. I believe they had been shot at before and if I see them again it will be the last time. Im not taking a chance of them getting the drop on me or someone else in the dark