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| Cat With Two Faces |
Meet Frank and Louie!
He's a cat with two
faces, and last year he entered the
Guinness World Records as the longest
surviving cat with this condition.
Male cats with this are referred to as
"Janus cats", after the Roman god Janus.
Janus cats appear to be conjoined twins,
but their condition is actually known as
Diprosopus and is the result of a protein
called sonic hedgehog homolog (SHH).
Yes, there's a protein called the sonic
hedgehog protein.