Seventy-five percent of eye tumors in the cat are malignant, aggressive types of most cancers (in canines the ratio is reversed, 75 percent of tumors are benign and do not spread or grow to be daily life-threatening). An Iris melanoma is the most common sort of tumor influencing cat's eyes. More mature cats may possibly create a observable brown or black spot on the iris of their eye. The Iris is the colored component of the eye My websites: Blood in Cat Urine - Ideas For Supporting Your Cat