Leashed as in a coller? He didn't look leashed? Moving tword the officer gives him the ability to shoot. I feel for the dog his body language was happy tail wagger, then shot animal. In our dealings with people some of them are panic prone. Screaming and clutching at walls while our dogs calmly look at them trying to figure out what is going on. What I want to say is this officer look panicky, and they just walked into the dogs reach on their decision to come into his reach. They just had to ask the man to come to them.