POWER OF ATTORNEY ? SECTION 16 FILINGS

Know all by these presents, that the undersigned hereby constitutes and
appoints David P. Johst and Matthew L. Daniel as the undersigned's true
and lawful attorneys in fact to:

(1) 	prepare, execute in the undersigned?s name and on the undersigned?s
behalf, and submit to the U.S. Securities and Exchange Commission (the ?SEC?)
a Form ID, including amendments thereto, and any other documents necessary or
appropriate to obtain codes and passwords enabling the undersigned to make
electronic filings with the SEC of reports required by Section 16(a) of the
Securities Exchange Act of 1934 or any rule or regulation of the SEC;

(2) 	execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of Charles River Laboratories
International, Inc. (the ?Company?), Forms?3, 4, and 5 in accordance with
Section?16(a) of the Securities Exchange Act of 1934 and the rules there
under, and any other forms or reports the undersigned may be required to
file in connection with the undersigned?s ownership, acquisition, or
disposition of securities of the Company;

(3) 	do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form?3,
4, or 5, complete and execute any amendment or amendments thereto, and timely
file such form with the United States Securities and Exchange Commission and
any stock exchange or similar authority; and

(4) 	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney in fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney in fact on behalf of
the undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney in fact may approve
in such attorney in fact's discretion.

The undersigned hereby grants the attorney in fact full power and authority to
do and perform any and every act and thing whatsoever requisite, necessary, or
proper to be done in the exercise of any of the rights and powers herein
granted,as fully to all intents and purposes as the undersigned might or could
do if personally present, with full power of substitution or revocation, hereby
ratifying and confirming all that such attorney in fact, or such attorney in
fact's substitute or substitutes, shall lawfully do or cause to be done by
virtue of this power of attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorney in fact, in serving
in such capacity at the request of the undersigned, is not assuming, nor is
the Company assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms?3, 4, and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys in fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 7th day of February, 2011.




/s/James C. Foster
Signature