Dog Fighting Prohibition Act - Amends the Animal Welfare Act to make it unlawful to: (1) knowingly sponsor or exhibit an animal in, or knowingly attend, a dog fighting venture; and (2) knowingly sell, buy, possess, train, transport, deliver, or receive for purposes of transportation any dog or other animal for the purposes of having the dog, animal, or offspring of the dog or other animal participate in a dog fighting venture. Provides for imprisonment for up to five years for violations.