The foot was scratched by the dog's paw, and it didn't break the skin or bleed. Do you need an injection?

You don't need an injection when you are scratched by a dog's paw, because the intact epidermis can prevent the invasion of rabies virus, which can't be stored on the body surface and is easy to die in a short time. Just wash the bitten part with soapy water, and you can rest assured without vaccination.

Extended data:

There are two kinds: one is prevention after exposure (after biting) and the other is prevention before exposure (without biting).

(1) Prevention after biting (after exposure). Any suspected contact with rabies virus, such as being bitten, scratched (even slightly scratched) by dogs, cats, foxes, wolves, skunks, raccoons, blood-sucking bats and other animals (including seemingly healthy animals), and damaged skin or mucous membranes licked by animals, must be vaccinated.

(2) No bite (before exposure) prevention. Veterinarians in epidemic areas, animal husbandry managers, rabies virus experimenters, vaccine manufacturers, medical staff of rabies patients, cave workers, people who have frequent contact with other mammals, children in severe epidemic areas, postmen, tourists visiting epidemic areas, and other staff with high risk of virus bite or contact are all vaccinated with rabies vaccine.

Baidu encyclopedia: rabies vaccine