As part of the Slitheens' plan to destroy the planet Earth, they modified an Earth pig so that it looked like an alien. They then dressed it up in a spacesuit, and put it in a ship, which they crashed into the Thames. The pig had no idea about their plans and died trying to escape. When the Ninth Doctor examined the body he realised that everything was not as it seemed. The figurine is about 6.5 cm tall.