are Hippo’s more closely related to pigs??.........or whale’s?
Do the link-http://www.sciencedaily.com/releases/2009/03/090318153803.htm
I watched a docomentary on this subject a couple of months ago on the National Geographic channel and it was really surprising to see how the facts appear to fit together. The most startling bit of evidence is the underwater sounds made by hippos and whales, they are indeed very similar.
I guess the final conclusions, if any can even be made, will come out with genome sequencing research, but even those kinds of facts will only point in certain directions. But the possibilities are really amazing as to how our present day assortments of mammalian species are related to each other!