WILTON, Conn., May 14, 2014 /PRNewswire/ -- Blue Buffalo, the nation's leading natural pet food company, has filed a lawsuit against Nestle Purina PetCare Company for defamation, unfair competition, false advertising, and violations of trade practice statutes. "In response to Nestle Purina's malicious attacks against us, we have initiated a lawsuit against them demanding that Nestle Purina and the individuals working in concert with them be held accountable for their false accusations about Blue Buffalo, and that their carefully orchestrated smear campaign against the BLUE brand cease," said Blue Buffalo founder Bill Bishop. The complaint states that Nestle Purina has blanketed the media with blatantly false ads about Blue Buffalo's ingredients and malicious attacks on Blue Buffalo's integrity.