sorry to hear that mate hope your not in too much pain and your shoulder heals quick is there anyone who can run buck on for you a bit if you cant get him out yourself?
hope you get your dogs back lads theres some proper c**ts out there to take a mans dogs in broad daylight like that they need their thieving hands cutting off
rule out injury first of all get him checked over for any niggling problems by a boneman I wouldn't give antibiotics unless I knew what was up with the dog first