A tortoise’s shell is a powerful form of defense, but it has one serious downfall. If a tortoise is ever flipped on its back side it’s nearly impossible to get right side up again. This video was posted online last month, but has only gone viral now.

The clip showcases the giant tortoise exhibit at a zoo when one tortoise was flipped over. Thankfully, a second tortoise came to its rescue and flipped the big guy back on his feet.