The Dyeing dart frog, (a nickname given by those in the hobby of keeping dart frogs) or dyeing poison frog (Dendrobates tinctorius), is a species of frog in the Dendrobatidae family. It is among the largest species, reaching lengths of 50 mm (2.0 in). This species is distributed throughout the eastern portion of the Guiana Shield, including parts of Guyana, Suriname, Brazil, and nearly all of French Guiana.