Cats cannot be infected with plague. Plague is caused by the Yersinia pestis bacterium, which is mainly spread among rodents, and cats are not rodents. Because cats have much higher immunity to plague than other animals, most cats can recover naturally even after being infected and retain plague-specific antibodies in their bodies for a long time.

Methods to prevent pets from being infected with plague:

1. Regular deworming. Do a good job of regular internal and external deworming, especially for pets that often go out.

2. Avoid the source of infection. When taking pets out, you should avoid pets coming into contact with stray animals, and you should also avoid pets' food bowls, water basins, food, nests, etc. coming into contact with rats.

3. Do a good job in environmental sanitation. Maintaining indoor hygiene, taking out garbage frequently, and disinfecting the room with pet-specific disinfectant can keep diseases away from pets.

4. Remove rats. Rat eradication work must be done well, especially when traces of rodent activity such as rat droppings are found, timely prevention must be carried out.

5. Regular physical examination. Regular physical examinations for pets can detect health problems in pets in time, and timely treatment can minimize the impact of the disease.