Abstract: An animal sorting module including a general frame (1) assembly defining a passageway (2) through which an animal can travel, the frame having a single entry point opening (3) at or near a first end (4) and two exit point openings (6) at or near a second end (7) wherein the entry point and at least one of the exit points are defined by a pair of elongate substantially cylindrical rollers (8) which can be moved between a first position occluding the opening and a second position exposing the opening.