I think that animals or human friend, but also our human friends forever. For example, the dog, the dog how loyal it is to human beings; Can help us to catch mice cat... But they also don't want to get H7N9, but H7N9 is animal can't resist. I think that animals or human friend, but also our human friends forever. For example, the dog, the dog how loyal it is to human beings; Can help us to catch mice cat... But they also don't want to get H7N9, but H7N9 is animal can't resist.