Therefore, this spin-off is not only resulting in long-term benefits associated with specialization, but also some near-term benefits in form of stock repurchases. On the other hand, Zoetis Inc (NYSE:ZTS) is now an independent company, able to develop its own strategic plans with regards to animal health. In 2012, Pfizer invested $400 million in R&D on the animal health unit, but now, Zoetis plans to invest about $385 million to $415 million in 2013. Zoetis is well set to stand on its own and certainly needs no helping hand from Pfizer. The Kalamazoo, MI-based company has a 60 year-old history with Pfizer, with 29 manufacturing plants located in its Michigan base. It also has other plants in California, Iowa, Maryland, Missouri, Nebraska, North Carolina, and New Jersey, which also houses its headquarters. Both Pfizer Inc. (NYSE:PFE) and Zoetis shares have fluctuated during the transition period, depicting a relative rally since February. It seems as if the $2.2 billion Zoetis IPO triggered the rally.