-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Bi+c+Xh1Fvxrk7XIjm6vsr57f5qT2DwCzEgiA2wd0cxNlaKd1FIodd/rQPMtpF4O
 8GQbIHBSGd+rWkU7P7dDUQ==

<SEC-DOCUMENT>0000903423-04-000021.txt : 20040107
<SEC-HEADER>0000903423-04-000021.hdr.sgml : 20040107
<ACCEPTANCE-DATETIME>20040107191308
ACCESSION NUMBER:		0000903423-04-000021
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040105
FILED AS OF DATE:		20040107

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PETCO ANIMAL SUPPLIES INC
		CENTRAL INDEX KEY:			0000888455
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-RETAIL STORES, NEC [5990]
		IRS NUMBER:				330479906
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0128

	BUSINESS ADDRESS:	
		STREET 1:		9125 REHCO RD
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		6194537845

	MAIL ADDRESS:	
		STREET 1:		9125 REHCO RD
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TPG ADVISORS III INC
		CENTRAL INDEX KEY:			0001107479
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23574
		FILM NUMBER:		04514121

	BUSINESS ADDRESS:	
		STREET 1:		301 COMMERCE STREET
		STREET 2:		SUITE 3300
		CITY:			FT WORTH
		STATE:			TX
		ZIP:			76102
		BUSINESS PHONE:		8178714000

	MAIL ADDRESS:	
		STREET 1:		301 COMMERCE STREET
		STREET 2:		SUITE 3300
		CITY:			FT WORTH
		STATE:			TX
		ZIP:			76102
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tpgadvisors-f4_testex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<!-- - EDGAR Ease Plus 1.0                                   07/25/03  TT    -->
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
   <periodOfReport>2004-01-05</periodOfReport>
   <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000888455</issuerCik>
        <issuerName>PETCO ANIMAL SUPPLIES INC</issuerName>
        <issuerTradingSymbol>PETC</issuerTradingSymbol>
   </issuer>
   <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001107479</rptOwnerCik>
            <rptOwnerName>TPG ADVISORS III INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TEXAS PACIFIC GROUP</rptOwnerStreet1>
            <rptOwnerStreet2>301 COMMERCE STREET, SUITE 3300</rptOwnerStreet2>
            <rptOwnerCity>FT WORTH</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>76102</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
         <isDirector>0</isDirector>
         <isOfficer>0</isOfficer>
         <isTenPercentOwner>1</isTenPercentOwner>
         <isOther>0</isOther>
      </reportingOwnerRelationship>
   </reportingOwner>
 <nonDerivativeTable>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>Common Stock, par value $0.001 per share</value>
      </securityTitle>
      <transactionDate>
         <value>2004-01-05</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>S</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>550000</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>29.50</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>D</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>5805955</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
            <value>I</value>
         </directOrIndirectOwnership>
         <natureOfOwnership>
            <value>See (1) in &quot;Explanation of Responses&quot; below</value>
         </natureOfOwnership>
      </ownershipNature>
   </nonDerivativeTransaction>
 </nonDerivativeTable>
   <remarks>(1)  Shares are beneficially owned by funds managed by TPG Advisors III, Inc. (the &quot;Reporting
Person&quot;). Pursuant to Rule 16a-1(a)(2)(ii)(B) of the Securities Exchange Act of 1934, as amended (the
&quot;Act&quot;), the Reporting Person is deemed to be the beneficial owner of the shares of the Issuer
beneficially owned by such funds only to the extent of the greater of the Reporting Person's direct or
indirect interest in the profits or capital account of such funds. Pursuant to Rule 16a-1(a)(4) under
the Act, this filing shall not be deemed an admission that the Reporting Person is, for purposes of
Section 16 of the Act or otherwise, the beneficial owner of any securities owned by such entities in
excess of such amount. David Bonderman, James G. Coulter and William S. Price, III (each a
&quot;Shareholder&quot;) are officers, directors and sole shareholders of the Reporting Person, and therefore may
be deemed to beneficially own the shares owned by the Reporting Person. Mr. Price is also a director
of the Issuer. Each Shareholder disclaims beneficial ownership of such shares in excess of the
greater of his direct or indirect pecuniary interest in such shares.</remarks>
   <ownerSignature>
      <signatureName>Richard A. Ekleberry, Vice President</signatureName>
      <signatureDate>2004-01-06</signatureDate>
   </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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