They might be OK outside, but the penguins have a chick in the flock and zookeepers don't want to risk letting them out when it's 40 degrees below zero.
They're really bad at sex, they all belong to China, and more panda trivia.
Bertha the hippo had been living at the Manila Zoo in the Philippines since 1959.
Animals need some ice-cold loving too.
A mob of investors pushed the donkey into the tiger pit following a dispute with zoo officials.