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<SEC-DOCUMENT>0001104659-10-020969.txt : 20100421
<SEC-HEADER>0001104659-10-020969.hdr.sgml : 20100421
<ACCEPTANCE-DATETIME>20100421143142
ACCESSION NUMBER:		0001104659-10-020969
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100419
FILED AS OF DATE:		20100421
DATE AS OF CHANGE:		20100421

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KNOTT DAVID M
		CENTRAL INDEX KEY:			0000808722

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34085
		FILM NUMBER:		10761471

	MAIL ADDRESS:	
		STREET 1:		485 UNDERHILL BLVD
		STREET 2:		STE 205
		CITY:			SYOSSET
		STATE:			NY
		ZIP:			11791-3419

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Pet DRx CORP
		CENTRAL INDEX KEY:			0001331931
		STANDARD INDUSTRIAL CLASSIFICATION:	AGRICULTURE SERVICES [0700]
		IRS NUMBER:				562517815
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		215 CENTERVIEW DRIVE
		STREET 2:		SUITE 360
		CITY:			BRENTWOOD
		STATE:			TN
		ZIP:			37027
		BUSINESS PHONE:		703-448-7688

	MAIL ADDRESS:	
		STREET 1:		215 CENTERVIEW DRIVE
		STREET 2:		SUITE 360
		CITY:			BRENTWOOD
		STATE:			TN
		ZIP:			37027

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Echo Healthcare Acquisition Corp.
		DATE OF NAME CHANGE:	20050630
</SEC-HEADER>
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                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2009-07-28</value>
            </exerciseDate>
            <expirationDate>
                <value>2010-03-22</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5480</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Managed Account B</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Reporting Person is the managing member of Knott Partners Management, LLC, which is (i) the sole general partner of Shoshone Partners, L.P., Knott Partners Offshore Master Fund, L.P., and Mulsanne Partners, L.P. and (ii) the managing general partner of Knott Partners, L.P.</footnote>
        <footnote id="F2">The Reporting Person is the sole director and the president of Dorset Management Corporation, which (i) provides investment management services to Knott Partners Offshore (SRI) Fund Limited and (ii) separate institutional managed accounts (each, a &quot;Managed Account&quot;).</footnote>
        <footnote id="F3">As a result of the Reporting Person's interests in Knott Partners Management, LLC and in Dorset Management Corporation, the Reporting Person has investment discretion and control of the securities in this entry. The Reporting Person may be deemed to beneficially own an indirect pecuniary interest in securities in this entry as a result of a performance related fee. Except with respect to Knott Partners, L.P., Knott Partners Offshore Master Fund, L.P., and Shoshone Partners, L.P., in which the Reporting Person owns a beneficial interest, the Reporting Person disclaims beneficial ownership therein except to the extent ultimately realized. Each of Knott Partners, L.P., Knott Partners Offshore Master Fund, L.P., Shoshone Partners, L.P., Mulsanne Partners, L.P., Knott Partners Offshore (SRI) Fund Limited and each of the Managed Accounts disclaims beneficial ownership of securities reported as owned by any other party.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/David M. Knott</signatureName>
        <signatureDate>2010-04-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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