That is the understatement of the week.....
Calf born with two heads:
"Veterinarian Dr. Jimmy Clanton says, 'It would be unusual to see that, but it would be even more unusual if it were alive and you were able to save it or it was able to stand or nurse, that would be unusual.'
Clanton adds, 'The cells just didn't divide like they should have. Instead of winding up with two heads and two bodies you wind up with one head and two bodies, or two heads and one body, but it is definitely a mutation.' "

Good to know the vet knows a mutation when he sees one.....