This item is considered animal food (not pet food) because it contains beef tripe that is not washed. Material comes in 2 x 25lb (2 x 11.3kg) blocks in each box. 200 boxes a month are available (10,000/lb or 4,537/kg)It is a coarsely ground material that contains:Beef trimBeef tripe (not washed)Beef heartBeef lungsBeef liverBeef kidneyBeef spleen