That's the same reaction my 2 had when they were fed kibble! :lol: I ran out of the raw and gave them kibble in a pinch, and they were like "how do I eat this weird stuff?" They also have trouble eating human food that falls to the floor, like chips - they can chew through a raw bone with no problem, but have no clue how to eat a pretzel or chip if it falls to the floor! They try to eat it, then spit it out after a while...I guess it all depends on what they're used to!
Actually, I gave Sophie a beef short rib (don't know if you have these in the UK and Ireland) and she looked at it as if it were a foreign object. She kept looking at me, as if to say, "what do I do with THIS?" I finally picked it up and never tried it again.