Stumpy is a box turtle, who at the age of 12 lost a leg to injury and infection. Lesley Mailler, a veterinary at the Oatland Island Wildlife Center of Savannah, performed the amputation, reports the Savannah Morning News. But she had another idea of how to help, and brought the turtle to her daughter’s elementary school. A class of 5th graders designed Stumpy a new leg with a ball caster design and made it with the school’s 3D printer. Although the turtle can’t retract her new leg into her shell, it does help her roll along her way.