What is the correct guideline for a domestic animal NOT vaccinated against rabies when exposed to a rabid animal?

The guideline states that a domestic animal that has not been vaccinated against rabies and is exposed to a rabid animal must be euthanized or vaccinated and confined for a period of 90 days. This is due to the serious nature of rabies, which is a fatal disease once symptoms appear.

If the animal is euthanized, it prevents any potential transmission of the virus to humans or other animals, thereby protecting public health. Alternatively, if the animal is vaccinated post-exposure, the vaccination can help boost its immune response against the rabies virus, and the confinement period allows for monitoring for any signs of illness while significantly reducing the risk of rabies transmission. This rigorous protocol is essential for managing rabies exposure and safeguarding both animal and public health.

The other options do not follow the established protocols for rabies exposure, which is critical in such situations to mitigate the risk of rabies outbreaks.