It is doesn’t happen very often, but every once in a while an animal is born with two heads. These weird
two headed animals usually don’t seem to live very long, but while they
are alive they sure are a fascinating to look at. 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 mono zygotic embryonic disks.
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