Taming the Wild Researchers in Siberia have managed to breed foxes as tame as dogs. It's a feat that might unlock the genetics of violent behavior. New law: Service animal can only be dog or mini-horse New federal guidelines issued March 15 by the U.S. Department of Justice for the Americans with Disabilities Act limit service animals to dogs and housebroken miniature horses only. Top 10 Miniature Animals On the last day of 2010, a miniature panda cow was born on a Colorado farm, the product of years of crossbreeding to create one of 24 known cows with panda-like coloring. TIME takes a look at other animals in miniature form. Human disease and our animal cousins We hear a lot about animal diseases that make the jump to humans—swine flu, for instance. But this transfer goes the other way, too.