Peter’s younger sister Petra attempts to reveal what is right and what isn’t in the events that follow - and when she finds the solution - it’s a surprise for everyone.

There have been 24 pets and a host of Guide Dogs appearing on the show throughout Blue Peter's history. Here is all there is to know about them, we love them all! Blue Peter's first dog - Petra ...

There have been 24 pets and a host of Guide Dogs appearing on the show throughout Blue Peter's history. Here is all there is to know about them, we love them all! Blue Peter's first dog - Petra ...