Dogs transmit rabies to humans mainly through bites or scratches, and the medium for spreading rabies virus among bites or scratches is saliva, which is the saliva of dogs. Because the saliva of a sick dog contains rabies virus, the saliva of a dog carrying rabies virus also contains rabies virus, and after being bitten or scratched, it is possible to transmit rabies to people through saliva. However, it also depends on whether the dog carries rabies virus. If the dog is a domestic pet dog and has not had much contact with outside wild animals, and has been vaccinated regularly and has had two rabies vaccinations, it can be assumed that the pet dog does not carry rabies virus and the saliva is unlikely to transmit rabies. Drool will not give rabies if it is licking intact skin, and it is only when it bites the skin or even bleeds that it may be contagious.