-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000888455-06-000100.txt : 20061027
<SEC-HEADER>0000888455-06-000100.hdr.sgml : 20061027
<ACCEPTANCE-DATETIME>20061027173856
ACCESSION NUMBER:		0000888455-06-000100
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20061026
FILED AS OF DATE:		20061027
DATE AS OF CHANGE:		20061027

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MAJOR FREDERICK W
		CENTRAL INDEX KEY:			0001186412

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23574
		FILM NUMBER:		061169920

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		8584537845

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

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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
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    <periodOfReport>2006-10-26</periodOfReport>

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        <issuerCik>0000888455</issuerCik>
        <issuerName>PETCO ANIMAL SUPPLIES INC</issuerName>
        <issuerTradingSymbol>PETC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
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            <rptOwnerCik>0001186412</rptOwnerCik>
            <rptOwnerName>MAJOR FREDERICK W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9125 REHCO ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN DIEGO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92121</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr. VP Information Systems</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
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            </transactionDate>
            <transactionCoding>
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                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionAcquiredDisposedCode>
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        <derivativeTransaction>
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            <transactionDate>
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            </transactionDate>
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                <footnoteId id="F2"/>
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            <transactionAmounts>
                <transactionShares>
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                    <footnoteId id="F4"/>
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                <transactionAcquiredDisposedCode>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <expirationDate>
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            <securityTitle>
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            <conversionOrExercisePrice>
                <value>25.09</value>
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            <transactionDate>
                <value>2006-10-26</value>
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                <transactionShares>
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                <transactionPricePerShare>
                    <value>3.91</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <value>2002-06-06</value>
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                <value>2012-06-06</value>
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                <underlyingSecurityTitle>
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    </derivativeTable>

    <footnotes>
        <footnote id="F1">These shares of common stock are represented by restricted stock units, which represent a contingent right to receive one share of PETCO Animal Supplies, Inc. common stock.</footnote>
        <footnote id="F2">Disposed of pursuant to merger agreement dated as of July 13, 2006 by and among the issuer, Rover Holdings Corp. and Rover Acquisition Corp.</footnote>
        <footnote id="F3">Disposed of pursuant to the merger agreement dated as of July 13, 2006 in exchange for $29.00 for each share of PETCO common stock held by the reporting person.</footnote>
        <footnote id="F4">This option was cancelled pursuant to the merger agreement dated as of July 13, 2006 in exchange for a cash payment equal to the product of (i) the number of shares of PETCO common stock subject to the option multiplied by (ii) the excess of $29.00 over the per share exercise price.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: /s/Sabrina Randolph by Power of Attorney  For: Fred Major</signatureName>
        <signatureDate>2006-10-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----