The reader can tell from the article that . Press enter to interact with the item, and press tab button or down arrow until reaching the Submit button once the item is selectedAOfficials at the University of Vienna in Austria are opposed to experiments on animals. BResearchers expected the dogs to prefer sausage over plain brown bread. CAll animal experts would agree with Range's team that dogs can sense unfairness. DRange's reward experiments were the first of this kind to be done on animals.