Ferrets rely entirely on the prairie dogs for food and the construction of their homes. Thus, with the continued loss of prairie dogs, the population of ferrets will also get a decline.
The black-foot ferret refers to a nocturnal stalker whose destiny is somewhat connected with that of the prairie dog. The ferret feeds on mice, ground squirrels, insects, and birds, and it thrives in the burrows constructed by prairie dogs that are also its main prey.
However, due to the formation of farms and pastures, and poisonous campaigns and massive hunting against the prairie dogs that are the main source of food for ferrets are also causing the population of the ferret to decline.