Methods and systems for processing raw animal hides into leather are provided. In particular, one or more embodiments comprise a tanning manager that directs the routing of hides to a plurality of tanning drums. This allows the tanning manager to efficiently use the capacity of the plurality of tanning drums and provides improved consistency in the tanning of the hides. Furthermore, one or more embodiments enable the tanning manager to route hides to tanning drums based on various factors, such as hide type, hide weight, and hide size. In addition, one or more embodiments provide the tanning manager with greater control over the processing of hides into leather by customizing the tanning recipes applied to each batch of hides.