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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">CURRENT REPORT</font></div>

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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Securities Exchange Act of 1934</font></div>

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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Date of Report (Date of earliest event reported):&#160; September 14, 2012</font></div>

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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 18pt; FONT-WEIGHT: bold"><a name="fis_unidentified_table"><!--EFPlaceholder--></a>MWI VETERINARY SUPPLY, INC.</font></div>

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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Identification No.)</font></div>
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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Check the appropriate box below if the Form&#160;8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</font></div>

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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">On September 14, 2012, in response to a motion for preliminary injunction filed by MWI Veterinary Supply Co. (&#8220;MWI&#8221;) in the lawsuit pending in the United States District Court for the District of Idaho against Harold Wotton and Darroll Wotton (the &#8220;Defendants&#8221;), the Court issued an order enjoining the Defendants as well as their officers, agents, employees, attorneys, and all persons who are in active concert or participation with them from selling any veterinary orthopedic equipment, including (1) one-time consumables like sutures and bandages, (2) non-reusable items like implants and bone screws, or (3) reusable tools such as surgical scissors, scalpel blades or forceps in the United States, Canada, Germany and Dubai.&#160;&#160;The Court&#8217;s injunction will last through January of 2014.&#160;&#160;MWI&#8217;s lawsuit against the Defendants and the Defendants counterclaims against MWI are otherwise still pending in the United State District Court for the District of Idaho.</font></div>

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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">/s/ Mary Patricia B. Thompson</font></div>
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<div style="TEXT-INDENT: -18pt; DISPLAY: block; MARGIN-LEFT: 18pt; MARGIN-RIGHT: 0pt" align="left"><font style="FONT-STYLE: italic; DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Senior Vice President of Finance and Administration, Chief Financial Officer</font></div>
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form8k.htm
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):  September 14, 2012
MWI VETERINARY SUPPLY, INC.
(Exact name of registrant as specified in its charter)
Delaware
000-51468
02-0620757
(State or other jurisdiction of
Incorporation)
(Commission File
Number)
(I.R.S. Employer
Identification No.)
3041 W. Pasadena Dr. Boise, Idaho 83705
(Address of principal executive offices)   (Zip Code)
(208) 955-8930
(Registrant's telephone number, including area code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
q
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
q
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
q
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
q
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 8.01
Other Events.
On September 14, 2012, in response to a motion for preliminary injunction filed by MWI Veterinary Supply Co. ("MWI") in the lawsuit pending in the United States District Court for the District of Idaho against Harold Wotton and Darroll Wotton (the "Defendants"), the Court issued an order enjoining the Defendants as well as their officers, agents, employees, attorneys, and all persons who are in active concert or participation with them from selling any veterinary orthopedic equipment, including (1) one-time consumables like sutures and bandages, (2) non-reusable items like implants and bone screws, or (3) reusable tools such as surgical scissors, scalpel blades or forceps in the United States, Canada, Germany and Dubai.  The Court's injunction will last through January of 2014.  MWI's lawsuit against the Defendants and the Defendants counterclaims against MWI are otherwise still pending in the United State District Court for the District of Idaho.
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
MWI VETERINARY SUPPLY, INC.
Date:  September 17, 2012
By:
/s/ Mary Patricia B. Thompson
Mary Patricia B. Thompson
Senior Vice President of Finance and Administration, Chief Financial Officer