The Dyeing Poison Dart Frog (Dendrobates tinctorius), also called the dyeing dart frog, dyeing poison frog, tinc (a nickname given by those in the hobby of keeping dart frogs), Suriname cobalt poison frog, or cobalt poison frog, is a species of poison dart frog. 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 and Venezuela, including parts of Guyana, Suriname, Brazil, and nearly all of French Guiana.
Like all poison dart frogs, they have alkaloid poisons, called batrachotoxins, that make them poisonous to eat. To keep predators from eating them at all, they have aposematic coloration: a blend of black, yellow, and blue, with some variations. Aposematic animals are always brightly colored, to make predators think twice about eating them. Poison dart frogs obtain these poisons by eating poisonous beetles, ants, and termites. They then manufacture the poisons into their skin. In fact, their bodies can make the poisons stronger and much more potent. Poison dart frogs also have suction pads on their toes to help them climb trees to find insects to eat.