I've only been to one zoo with pandas, Zoo Atlanta, (which is lucky, considering there's only three in the US and that number is supposed to go down by the end of the year) and the way they handle their pandas and the way guests react to them is on a completely different level from anything else. You'll see people gathered around their lions and elephants, sure, but there is always a crowd for the pandas. At times they've had to employ queues to accomodate the demand for the pandas. It's unlike anything else I've ever seen at a zoo.