First dose of Rabies vaccination
should be always given as soon as possible. This should be followed more strictly if you are from a rabies endemic area. Almost 90% of the world has rabies presence.
It should be given for every time a canine animal bites even vaccinated ones.
If there are bite marks and blood, he will be needing rabies immunoglobulin around the site of bite.
Above waist bite is of high risk than below waist but both should be considered same and treated as soon as possible
You should get your dog to vet, he may suggest repeat immunization