Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
TONELLI QUENTIN J
   2. Issuer Name and Ticker or Trading Symbol
IDEXX LABORATORIES INC /DE [IDXX] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President
(Last)
(First)
(Middle)
C/O IDEXX LABORATORIES, INC., ONE IDEXX DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
11/08/2005
(Street)

WESTBROOK, ME 04092		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 11/08/2005   M   746 A $ 22.6875 1,476 D  
Common Stock 11/08/2005   M   3,244 A $ 23.88 4,720 D  
Common Stock 11/08/2005   M   8,536 A $ 17.6875 13,256 (1) D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Incentive Stock Option (right to buy) $ 17.6875 11/08/2005   M     8,536   (2) 02/04/2010 Common Stock 8,536 $ 17.6875 0 D  
Incentive Stock Option (right to buy) $ 22.6875 11/08/2005   M     746   (3) 02/07/2011 Common Stock 746 $ 22.6875 2,000 D  
Incentive Stock Option (right to buy) $ 23.88 11/08/2005   M     3,244   (4) 10/18/2010 Common Stock 3,244 $ 23.88 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
TONELLI QUENTIN J
C/O IDEXX LABORATORIES, INC.
ONE IDEXX DRIVE
WESTBROOK, ME 04092		       Vice President  

Signatures

 Conan R. Deady, Attorney-in-Fact for Quentin J. Tonelli, PhD   11/09/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The reporting person indirectly holds 3,575 shares of Common Stock of IDEXX Laboratories, Inc., which shares are held by the Bret C. Tonelli UTMA. The reporting person disclaims beneficial ownership of these shares and this report should not be deemed an admission that the reporting person is the beneficial owner of such shares for purposes of Section 16 or any other purpose.
(2) Grant of option to buy shares of Common Stock exercisable as to 1,132 shares on 2/04/01; 1,904 shares on 2/04/02; and 2,000 shares on 2/04/03, 2/04/04 and 2/04/05.
(3) Grant of option to buy shares of Common Stock exercisable as to 1 share on 2/07/03; 2 shares on 2/07/04; 743 shares on 2/07/05; and 2,000 shares on 2/07/06.
(4) Grant of option to buy shares of Common Stock exercisable as to 336 shares on 10/18/03; 908 shares on 10/18/04; and 2,000 shares on 10/18/05.

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