This was a while ago, but when we were on a cruise in New Zealand, there were beagles at every port sniffing passengers coming ashore. At one port the beagle sat down next to my husband and looked up expectantly at it's handler. My husband was using a small bag that he had used onboard to take a towel and an apple to the pool the day before. Even though there wasn't any food in the bag, the beagle still got a reward from it's handler after my husband explained.