Id say obey the law . In most states its against the law to shoot a dog with a colar on , but if its a lose dog with no colar running in a pack well use your own descrion . If Im on my lease and there is a pack of dogs thretning me , growling and sutch , I dont care if they have colars or not , some will not leave . The lease owner says kill all dogs , but Im not going to kill a dog with a colar on thats not thretning me . I have 3 dogs and love them very mutch , too mutch to let them run lose . Someone who lets their dog run lose , or on other pepoles property , does not care mutch for them .