A device for picking up animal excrement includes a propulsion device for propelling the device, a pick-up device with a worm housing and a drivable conveyor worm arranged in the worm housing and which extends in a longitudinal direction to pick up animal excrement on the ground. The conveyor worm includes, along its longitudinal extent, a first conveyor section with a first conveying direction and a second conveyor section with a second conveying direction, and the second conveying direction runs counter to the first conveying direction. A collecting device collects the animal excrement picked up by the pick-up device, and the collecting device is connected to an outlet opening of the worm housing, arranged between the first and second conveyor section. The worm housing has a first pick-up opening in the region of the first conveyor section and a second pick-up opening in the region of the second conveyor section.