Sheep, like the pigs, are also mammals. And they do have certain organs that are identical or at least closely similar to those in humans. An example of such an organ, which is the same as in a human, is the sheep eyes. Other organs like the heart and brain, though similar in every major regard, do slightly, to some respect, vary in size.
Tags: Animals Experiments Human test study Mammals Mice Mouse Nature Organs Pig Primates Sheep