The photograph on the left is of a dog`s liver. The middle photograph is probably from an ox. It is a fetus. Might be a pig though. Pig livers, though, have a lot of connective tissue in them. Baby pig livers don`t, however, so this might be a pig. It might even be a horse or a monkey. The photograph on the right is from a pig. You can see the lesions. Work on the causes of lesions of that nature and on the observations it would take to get specific about etiology.
