The dyeing poison dart frog (Dendrobates tinctorius) is a species of poison dart frog. It is among the largest species, reaching lengths of 50 millimetres (2.0 in). It is distributed throughout the eastern portion of the Guiana Shield, including parts of French Guiana, Guyana, Suriname and Brazil. This dyeing poison dart frog was photographed in the Karlsruhe Zoo in Germany.Photograph credit: H. Zell