Will the saliva of a dog cause rabies?

Can if rabid: Rabies can be passed via the virus bearing saliva of an infected dog if that saliva gets into a break in the skin or is driven in with a bite.

Wound? : Rabies is a viral infection and major mode of transmission is through bite or wound. Is there a wound? Wash area quickly with soap and water and see a physician right away.

Yes if infected: If a dog with active rabies bites you, the virus is in the saliva and infection is likely. Most dogs are vaccinated against this disease and while dog bites are common, rabies from dog bites is very rare. The few cases of rabies in the USA come from bat and raccoon bites.