Abstract: A structure for transporting or temporarily holding live animals such as cattle or sheep is formed from two rows of modular units which include a livestock living or holding space, a feed supply and a base below the living space in communication with the living space for receiving sewage of livestock. A platform module rigidly joins the two rows and provides access for livestock and attendants to the units which have sides that are adapted to permit ingress and egress to and from the living space. A sewage removal duct is carried by the platform module and is in communication with each sewage space. Ventilation and water facilities may be carried by the platform module, and a modular feed store may be provided between adjacent carrier units in each row.