Abstract
The anurans have an extracutaneous pigmentary system, composed of melanocytes, which have an intense pigmentation and are responsible for the melanin's synthesis, and melanomacrophages, with phagocytic activity. These pigments are found in liver, spleen, kidneys, peritoneum, lungs, heart, blood vessels, thymus, gonads and meninges. The pigmentary system can be changed due to environmental…