Rabies is 100% fatal in most cases. If a human gets bitten by a suspected rabid animal, they can go to the hospital and get a series of shots that will kill the rabies virus in their body before it can cause a problem. Without those shots, people will die from rabies.
Pets and Rabies
If your pet gets bitten by a rabid animal and they have never had a rabies shot, they should be euthanized because there is no post-exposure vaccine for domestic animals like there is for people.