Where Do the Cows Go When the Fair Comes to Town?

Biking past Midsummer Common expecting to see the reddish-brown cows, my eyes fell upon a sign bearing one of the monikers of California's governor: Terminator. The fair has arrived in Cambridge. I suspect the cows will return next week, but where do you put a a dozen head of cattle for a week, and how do you get them there? Since the area around Cambridge is quite rural, one suspects that it wouldn't be too hard to locate a local temporary cow relocation service.