A chipped tooth is never pleasant, but when you spend 12 hours a day chewing bamboo it can begin to grind you down.
So Giant Panda Bai Yun must have been very relieved to visit the dentist at San Diego Zoo - and she even got to sleep through the whole procedure.
The Californian zoo, which was recently named one of the US's top ten zoos by USA Today, explained that, since Giant Pandas use their teeth to chew and break apart bamboo, they can get worn or damaged over time.
Bamboo is a Giant Panda's primary source of food but, as it isn't particularly nutritious, the animals need to eat a lot of it to get the energy they need.
