Well, the saying goes, two heads are better than one and these 10 two-headed animals put that saying to the test, literally. Be warned before watching, some of the videos may be disturbing.
Bicephalic or tricephalic animals are the only type of multi-headed creatures seen in the real world and are formed by the same process as conjoined twins: they result from the secondary union of two originally separate monozygotic embryonic disks. While the most common animals with two heads are two-headed snakes and tortoises many other species have had two heads as well. Take a double look at these two-headed animals.