You can't shoot dogs with current licenses basically. just shoot the dogs and toss the collars, or put under fence like they caught and came off as their dogs obviously came over/under, as happens all the time, as my fams dogs play or get out, the collars get left around yard, torn up/off or whole and caught on tops and bottoms of fences and decks all the fime at my fams. also you could claim bad vision and didn't have/take time or couldn't get close enough to look at tags as dogs were going after children invited over to play with and feed duckies and chickens. the law about tags is general for dogs roaming, not applying to vicious dogs, plus federal law overrides state county city ect. I just feel bad for dogs caught in middle and have bad owners, though guessing they're letting dogs over on purpose and may continue to kill birds anyway sadly as sounding. most hate birds and believe all diseased ect.