It definitely catches my attention as I have worked with livestock. Chances of a creature like this surviving are next to none, which makes it even more mythical. It can be really interesting to find out the kind of adventures a calf can have going around.
I would like to give it a try even if it's only to see the faces when you tell the players that they are going to interpret a calf (eyebrows raised) with two heads (intense frown) together (mouth opening, no words coming out).