Order mammalia by number of species; didephimorphia (possums); lagomorpha (bunnies); diprotodontia (marsupials); and some other critters; carvivora (dogs, cats and others); rodentia (rats); artiodactyla (giraffes, deer & whales?); primates (us!); eulipotyphyia (hedgehogs, moles, and shrews; chiroptera (bats); Clearly, the rodents are running this thing
