The plague mostly attacks prairie dogs but claims the occasional human as well.

FORBES: Fact and Comment

But, according to biologists, the chief killer of prairie dogs is the sylvatic plague.

ECONOMIST: An endangered nuisance

Each year, roughly 10 to 20 people in the United States develop plague from flea or rodent bites, mostly from infected prairie dogs in rural southwestern areas, the NIH says.

CNN: London rail excavation unearths suspected 'plague pit'