Cat in your luggage?

Many years ago we visited England and Greece (and had a wonderful bus tour of the southern Peloponnese...perhaps more on that later).  While in London we had bought the following at Covent Garden:

A metal cat to place in the garden. It was pretty small (and thin) so we had put it into our checked luggage and pretty much forgotten about it. We went to Greece and on a cruise on the Mediterranean and were finally returning to Canada from Athens.

At the airport they X-Ray all your luggage. Suddenly the man doing that work looked up and asked me "Do you have a cat in your luggage?" He actually motioned me around to look at his screen...there was the 'cat' clear as day and the 'eyes' seemed to be glowing in the X-Ray. He then laughed and let us through...guess it wouldn't have made the same X-Ray picture unless it was...

...something he didn't want to distub.