Weed control by guinea pig?

Although I feel at least as fond of grapes as any fruit (they were the first fruit I studied), I must confess that most articles on wine kind of bore me, as they have a tendency to just rehash the same ideas about the same small set of varieties, while I would much rather focus on new varieties, or just drinking the wine.

Most of this is true about this article, however the image of eleven million guinea pigs patrolling a vineyard, along with a race of dwarf sheep, made me like it anyway:

Sauvignon strategies, some involving sheep (Financial Times)