Four specimens of eyeball of adult hens and cats were used in this study. They were put in formalin 10 % for fixation after anatomical dissection of the head. After 24 hour of fixation, the whole specimens were processed for histological examination. The retina and cornea of both animals were examined under light microscope. In the hens and cats the eyeball was formed of three similar layers, sclera, choroid and retina, but in hens the sclera showed the presence of hyaline cartilage instead of collagen fibers. The choroid of cat was taller and more folded then in hens. The retina of hens showed the presence of rods more than in hens which reflect the ability of cat to recognize the objects in Dim light gradient then hens.