Man's best friend has taken on the form of a black lycra-covered arachnid, and, at gadgetshop HQ, we believe it's the perfect accompaniment to your digital music player - if you suffer from multiple personality disorder (or just like doing impressions).

This evil-looking little fella is the latest in a huge line of iPod compatible add-ons. In fact, the genius invention of The Talented Mr Jobs has spawned a whole industry in its own right. Looking for all the world like Venom, Spidey's alien symbiote, this one is mean, it's dark... and it's ready to rock.

Spi-Dog Venom goes a whole lot further than relaying the hip beats from your portable digital music player through its nifty internal speaker. It actually jigs along to the music and keeps time, frantically keeping up with the latest techno tunes and rocking on down to more classic guitar-based riffs. As we believe they're called. In fact, this is a contraption that seriously knows its music - and flashes its lights to prove it.

Indeed, Spi-Dog will happily sample the ambient music drifting through the atmosphere in your house or office and respond accordingly. But beware, for this is a beast that needs to be fed. And his soul food is music, of course. So pay him too little attention and play him too little music and he'll react in ways you least expect...