Hi Sir, I Have Had Dog Bite Last Month For

hi sir,
i have had dog bite last month for which i was injected 4 injections...next month i was again bitten by dog...do i need to admininster vaccine again
( sir in first bite case there was no signs of any bite on spot of contact , so no ARS was admininstered by doctor,today also similar case no mark,no blood, but worst case of infection will only previous ARV will protect me or should i look for dose of ARS this time)