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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001181431-05-060439.txt : 20051109
<SEC-HEADER>0001181431-05-060439.hdr.sgml : 20051109
<ACCEPTANCE-DATETIME>20051109135915
ACCESSION NUMBER:		0001181431-05-060439
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20051029
FILED AS OF DATE:		20051109
DATE AS OF CHANGE:		20051109

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HAYS PAUL RICHARD
		CENTRAL INDEX KEY:			0001213640

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-11303
		FILM NUMBER:		051189148

	BUSINESS ADDRESS:	
		STREET 1:		11011 VIA FRONTERA
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92127
		BUSINESS PHONE:		8584513771

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYNBIOTICS CORP
		CENTRAL INDEX KEY:			0000719483
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		IRS NUMBER:				953737816
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11011 VIA FRONTERA
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92127
		BUSINESS PHONE:		8584513771

	MAIL ADDRESS:	
		STREET 1:		11011 VIA FRONTERA
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92127
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd96777.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-10-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000719483</issuerCik>
        <issuerName>SYNBIOTICS CORP</issuerName>
        <issuerTradingSymbol>SBIO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001213640</rptOwnerCik>
            <rptOwnerName>HAYS PAUL RICHARD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11011 VIA FRONTERA</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN DIEGO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92127</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-10-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1249</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.13</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>24000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Common stock option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2005-03-30</value>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-12-30</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2400000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2400000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series C Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>778452</value>
                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>778452</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On October 29, 2005, Synbiotics Corporation effected a reverse stock split of its common stock in the ratio of 1-for-2,000.  Any fractional share resulting from the reverse split was cashed out by Synbiotics Corporation in the amount of $0.13 for each pre-reverse-split share of common stock which became part of a fractional share.  Mr. Hays received $162.37 for 1,249 pre-reverse-split shares of common stock which became part of a fractional share.  On October 30, 2005, Synbiotics Corporation effected a forward stock split of its common stock in the ratio of 2,000-for-1.</footnote>
        <footnote id="F2">The options, which vest quarterly over four (4) years, have exercise prices ranging from $0.08 per share to $0.34 per share</footnote>
        <footnote id="F3">On September 23, 2004, Mr. Hays purchased 100 shares of Series C Convertible Preferred Stock of Synbiotics Corporation.  The shares are convertible into shares of common stock at any time into such number of shares of common stock by dividing each share of Series C Convertible Preferred Stock, valued at $1,000, by the conversion price - initially set at $0.12846.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Paul R. Hays, by Keith A. Butler his attorney-in-fact</signatureName>
        <signatureDate>2005-11-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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