Animal Series is a 29-book series with 29 released primary works first released in 2003 with contributions by Boria Sax, Susan McHugh, Rebecca Stott, Helen Macdonald, Claire Preston, Martin Wallen, Katharine M. Rogers, Kay Rogers, Hannah Velten, Victoria de Rijke, Stephen Martin, Desmond Morris, Richard Schweid, Daniel Allen, Richard J. King, James Owen, Charlotte Sleigh, Richard Jones, Mikita Brottman, John Fletcher, Dan Wylie, Georgie Carroll, Daniel Heath Justice, Adam Dodd, Philip Armstrong, Peter Williams, Peter Coates, and Garry Marvin.