Sign up for our free daily newsletter to stay in the activist investing know. You know Zoetis as the world's largest producer of medicines for animals, but it's also a plaything for Bill Ackman's Pershing Square. The hedge fund owns about 8.5% of Zoetis and some 5% in its potential buyer Valeant Pharmaceuticals Intl Inc (NYSE:VRX) (TSE:VRX) Pharma. Ackman has a board seat at Zoetis, received in February, and also tried previously partnering with Valeant in its bid to buy Allergen. Valeant has been rumored to have made a preliminary offer to Zoetis for a buyout. If the issue wasn't clear - Ackman owns a stake in a company that might buy another major position of his. A corporate governance... More