A photograph captures a rare seven-headed snake found in Honduras. Polycephaly (i.e., having multiple heads) is a phenomenon that many different species of animals occasionally exhibit (most commonly snakes and turtles), and it is sufficiently unusual that discoveries of polycephaly animals typically become the subject of news stories.
Polycephaly animals, in general, fare poorly (particularly in the wild) and have very short life spans, while two-head snakes have been recorded to survive long enough to breed and live out typical lifespans.
Cases of bicephaly/dicephaly (two-headedness) are infrequent, while turricephaly (three-headedness) is extremely unusual. As far as we know, no living creatures born with more than three heads have ever been recorded, making the seven-headed snake depicted above a headline-grabbing anomaly if true.