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I am sorry your boy got scratched. If he is UTD on his Rabies vaccine you do not have to worry.
If not he needs to go to his vet for a booster.
Just clean the wound with peroxide and apply neosporin twice a day
Do not cover it because bacteria will grow in an airless environment.
Please let me know how he is doing.
I hope he will be fine.
Best wishes for him.