They look like greyhounds and move like greyhounds but the dogs on the screen are computer-generated images of the real thing. Every Wednesday, Friday and Saturday evening they fight it out on a simulated racing track while the real greyhounds - yes, there are real greyhounds - are busy racing each other at Swindon Greyhound Stadium.
Welcome to the world of virtual reality television (VTV), a technology that promises to transform the way live sporting events are broadcast over the internet. Greyhound racing is the first sport to be "televised" in this way - Swindon went live earlier this month - but Datacq, the privately-held Oxfordshire company behind the technology, is already looking at horse racing and motor sport.
