Apparatus and methods for mucking livestock enclosures and separating bedding material from animal waste are disclosed. Various embodiments are directed toward a mucking device having a scoop portion with a basket connected to a handle and a sliding lid that can be opened and closed by sliding a rotating sleeve along an inner shaft of the handle. The scoop of the mucking device can be inverted by rotating the inner shaft relative to the rotating sleeve, thus causing the basket to be disposed above the lid. Bedding material can be sifted out of the basket while retaining the animal waste. Once a desired amount of bedding material has been separated, the scoop can be opened by sliding the rotating sleeve along the inner shaft to open the lid and thus release the retained animal waste and residual bedding material. Other embodiments are directed toward methods for using the mucking device.