Moving cows is a part of managing every dairy in America. Are your dry cows grouped separately from the lactating herd? Do your fresh cows have their own pen so they can receive special attention? Management styles and specific circumstances dictate how often these moves take place and to what extent they affect animals. We see two schools of thought when it comes to grouping cows. This industry-wide debate centers on social interactions. While the effects of moving are well quantified in dry cow groups, the body of research on moving lactating animals is much smaller.