Charles River Schedules Second-Quarter 2009 Earnings Release and Conference Call

Charles River Laboratories International, Inc. (NYSE: CRL) will release second-quarter 2009 financial results on Tuesday, August 4^th, after the market closes. A conference call has been scheduled to discuss this information on Wednesday, August 5^th, at 8:30 a.m. ET.

Investors will have the opportunity to listen to a live webcast of the conference call through the Investor Relations section of the Company’s website at ir.criver.com. A replay will be accessible through the same website approximately two hours following the conference call.