People around the world can’t get enough of the bears at a zoo in China that stand up straight. They’re called sun bears, and Inside Edition found one in America! Casey is a 22-year-old sun bear in residence at ZooTampa in Florida. Zookeeper Amanda Powers works with Casey every day, and admits, “They can be a little bit silly.” Sun bears are the smallest bear species, and are extremely rare. There are only 2,000 of them in the world.