Animal Series is a 30-book series with 30 released primary works first released in 2003 with contributions by Boria Sax, Susan McHugh, Rebecca Stott, Helen Macdonald, Katharine M. Rogers, Kay Rogers, Claire Preston, Martin Wallen, Hannah Velten, Victoria de Rijke, Stephen Martin, Desmond Morris, Richard Schweid, Katarzyna Michalski, Sergiusz Michalski, Daniel Allen, Richard J. King, Mikita Brottman, Charlotte Sleigh, Richard Jones, James Owen, John Fletcher, Dan Wylie, Daniel Heath Justice, Georgie Carroll, Adam Dodd, Philip Armstrong, Peter Williams, Garry Marvin, and Peter Coates.