Tumors form due to abnormal multiplication of cells and can be benign or malignant. Benign tumors are harmless and do not spread. Malignant tumors are progressive and characterized by an uncontrollable growth that metastasizes to other parts of the body.

Apart from the above mentioned properties, tumors can further be classified according to the category of the cells that they affect. Eyelid tumors are a less common type of feline cancer that mostly affects white and older cats. They are also more prevalent among cats that remain outdoors in the sun for long periods of time.

Cancer in dogs and cats is a life-threatening condition that can originate in one part of the body and spread to the others. The issue with the condition is that the symptoms of cancer remain masked or hidden for a long time and surface when it is too late. The symptoms of liver cancer in dogs can remain hidden for a long time since they can be wrongly diagnosed as digestive problems or parasitic infections.

Eyelid tumors, on the other hand, are usually visible to the naked eye and can be treated in their initial stages. Eyelid tumors should not be confused with nodules or masses that form due fungal infections and inflammation in the eyelid. Cat owners should watch out for symptoms like: