The condition when a species has more than one head is called polycephaly. Specifically if there are two heads it’s called bicephaly, while having three heads is tricephaly. There is no record in history of any species having more than three heads.

While having two heads is extremely rare, it can affect any vertebrate. Bicephaly has been reported in turtles, lizards, humans, snakes and other creatures. Although it’s more common for reptiles to be bicephalic because they produce a large amount of offspring and most reptiles lay eggs. These eggs are then exposed to environmental conditions which affect the development of the embryo inside.

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Two-Headed Baby Loggerhead Turtle

Two-Headed Western Rat Snake

Two-Headed Baby Deer

Some people believe that's two is better than one but in these kind of situation being with two head is so difficult and not normal....