In appearance he is much like Nibbler, but his coat is browner and there are fine hairs on his tail.
Even in the surrounding country it was a foggy day, but there the fog was grey, whereas in London it was, at about the boundary line, dark yellow, and a little within it brown, and then browner, and then browner, until at the heart of the City--which call Saint Mary Axe--it was rusty-black.