Charles River to Present at Cowen and Raymond James Conferences

Charles River Laboratories International, Inc. (NYSE: CRL) announced today that it will present at the Cowen and Company 30^th Annual Health Care Conference in Boston, Massachusetts on Wednesday, March 10^th, at 10:15 a.m. ET and the Raymond James 31^st Annual Institutional Investors Conference in Orlando, Florida on Wednesday, March 10^th, at 11:00 a.m. ET. Management will present an overview of Charles River’s strategic focus and business developments.

A live webcast of the presentation will be available through a link that will be posted on the Investor Relations section of the Charles River website at http://ir.criver.com. A webcast replay will be accessible through the same website approximately three hours after the presentation and will remain available through March 24, 2010.