Idk other animals are susceptible to infection but get bit and injured in the wild often and still survive and heal without any medical intervention. A human bite likely wouldn’t kill anything. Maybe a small rodent or bird. Also I’ve been bit by family members when young. It broke the skin and nothing happened. Probably depends on the individual who is biting you. A bite from a homeless guy for example could be worse.

Oh when biting other humans yeah. Probably not other animals though as they bite each other often. Even another human would be unlikely to die.

Source for human saliva bite? I don’t think that’s true.