What is icterus?
Icterus is also known as jaundice or yellow jaundice. It refers to an excessive accumulation of a yellow pigment in the blood and tissues. When icterus has been present for any length of time, it will discolor many tissues and will become visible as jaundice on most body surfaces, including the skin. It is most easily seen in the gingivae (gums), the sclerae (white part of the eyes), and the pinnae (ear flaps). Jaundice may be difficult to detect in dogs that have pigmented (dark) gums or skin.