Sparky now has a Twitter account. He's been tweeting to his doggie friends, and even a cat or two. He also follows a Meercat and the Bronx zoo's cobra, Mia.
You may follow him here.
He fancies himself as something of a security expert. Tweets constantly about invasions in the back garden and night prowlers.
I think he's a bit paranoid. Must be the Border Collie in him.