The Teat Tweet Dairy Diary now lets you follow the milking cycles of 12 dairy cows...on Twitter.

The Critical Media Lab at the University of Waterloo is using one farm's high-tech robotic milking system to give voice to our hooved friends who put the cheese in our sandwiches.

Each cow has an RFID (radio frequency identification) tag and a Twitter account. They "tweet" about what they are eating, when they are milked, and one even seems to prefer quoting the Roman poet Virgil. Another has announced her candidacy for prime minister of Canada.

To better know a dairy cow, visit the Teat Tweet Dairy Diary.