SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Ventresca Nicholas (Last) (First) (Middle) 251 BALLARDVALE STREET (Street) WILMINGTON MA 01887 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 03/31/2006	3. Issuer Name and Ticker or Trading Symbol CHARLES RIVER LABORATORIES INTERNATIONAL INC [ CRL ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Senior Vice President	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities are beneficially owned.

	/s/Nicholas Ventresca	04/05/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

 POWER OF ATTORNEY SECTION 16 FILINGS

Know all by these presents,
that
the undersigned hereby constitutes and appoints Joanne (Jody) P.
Acford 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 thereunder, 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 4th day of April, 2006.



		/s/Nicholas
Ventresca
			Signature

		Nicholas Ventresca

			Print Name