There was this hippo (pygmy) named Chico (above) at Heythrop Zoo that stopped eating... but with the help of a puppet, he happily starts eating now. The puppet that save the hippo from hunger, was also a hippo like Chico himself.

People that worked at the zoo was amazed and because of that, zoo keepers now used the famous gloves to feed Chico. Although the Chico starts to eat but the head keeper is still desperate to find the solution that lead to his problems.
This is what he said: "We had been trying everything as Chico was refusing to feed and when I saw the Madagascar hippo puppet in the supermarket I thought I'd give it a try. "We were extremely surprised when he took a liking to Gloria and we have been using it to feed him ever since."

Link:
http://news.bbc.co.uk/cbbcnews/hi/newsid_7730000/newsid_7738000/7738042.stm