Concept:Rinderpest is a serious viral disease restricted to animals, especially cattle and buffalo, and it does not infect humans.
Explanation:Anthrax, brucellosis, and trypanosomiasis are zoonotic diseases.
This means they can spread from animals to humans.
Rinderpest, however, affects only ruminants such as cattle and buffalo.
It is caused by a virus and is not known to affect human beings.
Hence, among the given options, rinderpest is the disease that affects only animals other than humans.
Answer:B. rinderpest