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If the bite was unprovoked and if it caused bleeding then you should get a course of anti-rabies vaccine plus a shot of tetanus immunoglobulin, to be on the safe side. Even though it is a pet, it is not immunized so the standard protocol is to get vaccinated if the above-mentioned factors are present. Also, wash the wound with soap and water thoroughly. If the skin was not broken and if the attack was provoked, then it is not necessary to get vaccinated. However, given the nil immunization status of your pet, you may want to be on the safe side and get the shots.