Photo:Dog With 3 Heads

I came across these pictures recently said to be a real dog with 3 heads and it's not photo-shopped.
I find it pretty difficult to believe as I know of dogs with three heads only in Greek mythology as Cerberus...lol!
However, these are strange times where humans give birth to animals, animals with all sorts of deformities are reported, amongst other weird things, so what is impossible?