a dog with more than one microchip

This is a story about 'a friend of a friend', but despite that it's not an urban myth. My friend's niece had a Staffy that she loved. She had obtained it from the RSPCA as a four-year-old and had it microchipped when she bought it. A year later, on the recent New Year's Eve, as so often happens, it was frightened by the sound of fireworks and ran away.
That's the bad news.

But it was found and taken to a shelter. That's the good news.

However, a scan at the shelter revealed it had more than one microchip. Bad, because the chip revealed that the dog had been sadly missed by a loving family and was not four, but nine years old.

How could she deny the original owners the joy of this reunion? Even though that family acknowledged my friend's niece had bought the dog in good faith? After much soul-searching, she let it go to the rejoicing family.

It's a sad tale, but it has a nice ending. Now she has bought a lovely little golden retriever puppy to fill the gap in her household.