POWER OF ATTORNEY
Know all by these presents, that the undersigned hereby constitutes and
appoints each of Philip L. Francis, Robert F. Moran, Lawrence Molloy,
Emily Dickinson and J. Dale Brunk, signing individually, the
undersigned's true and lawful attorneys-in-fact and agents 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, an officer, director or holder of 10% of more of a
Registered class of securities of PetSmart, Inc. (the "Company"),
Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934, as amended (the "Exchange Act") and the rules
thereunder; (3) do and perform any and all acts for and on behalf of
the undersigned that may be necessary or desirable to complete and
execute such Form 3, 4 or 5, complete and execute any amendment or
amendments thereto, and timely file such forms or amendments with the
United States Securities and Exchange Commission and any stock exchange
or similar authority; and (4) take any other action of any nature
whatsoever in connection with the foregoing which, in the opinion of
such attorney-in-fact, may be of benefit, 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 to each such 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 attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not
assuming, nor is the Company assuming, any of the undersigned's
responsibilities to comply with Section 16 of the Exchange Act.
This Power of Attorney shall remain in full force and effect until the
earliest to occur of (a) 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, (b) revocation
by the undersigned in a signed writing delivered to the foregoing
attorneys-in-fact or (c) as to any attorney-in-fact individually,
until such attorney-in-fact shall no longer be employed by the Company.
IN WITNESS WHEREOF, the undersigned has cause this Power of Attorney to
Be executed as of this 30th day of September 2009.


Signature:	/s/ Rita V. Foley
Print Name:	Rita V. Foley