an animal does NOT have three eyes, i dont know what you are thinking!
Scallops
im not sure what animal has three eyes but i do knowthat if a animal gives birth the baby may have a birth defect.so it could lead to 2 heads of 3 eyes or even 8 toes on 1 foot.
The Tuatara has three eyes and it lives in New Zealand
The Tuatara, a lizard-like reptile that lives only in New Zealand, has those three "eyes".
Tuatara
The animal in the world that has three eyes is called the Tuatara. The animal is found in Australia and looks like a lizard.
It is unknown which, if any, animal has three eyebrows, however, the camel has three eyelids. These extra lids keeps their eyes protected during sandstorms.
the three adaptains of an animal are eyes nose and mouth
well there was that fish caught around Argentina with three eyes, or just called the "three-eyed fish", but it was near a nuclear power plant i think, so you can guess why it had three eyes.
lizard has three eyes but third one is not well formed.................
The Tuatara actually has 3 eyes but the third eye is under it's skin on it's forehead.