The invention relates to a tool for collecting a sample of animal tissue, for interacting with collection mechanism including at least one cutting element capable of cutting out a sample and a pushing element movable with respect to the cutting element and capable of pushing the sample into post-cutting storage area. According to the invention, such a tool includes: a mechanism for driving the cutting element (21), a mechanism for driving the pushing element (23), and a mechanism for reversibly coupling the drive mechanism of the cutting element with the drive mechanism of the pushing element.