Terence Block, president of Nestle Purina PetCare's North American petfood division, is retiring after 33 years with the company.

His retirement will take effect at the end of 2011. "I've had a wonderful ride there, working with great people," said Block. "There's a culture of winning and always seeking to get better." Block will be replaced by Joe Sivewright, the current president of Nestle Purina PetCare's Latin American & Caribbean division.