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 *
PFIZER INC
  2. Issuer Name and Ticker or Trading Symbol
Zoetis Inc. [ZTS]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
235 EAST 42ND STREET
3. Date of Earliest Transaction (Month/Day/Year)
02/06/2013
(Street)

NEW YORK, NY 10017
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
Class A Common Stock 02/06/2013   C   12,915,000 A (1) 12,915,000 D (2)  
Class A Common Stock 02/06/2013   S   99,015,000 D (3) 0 D (2)  

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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
Class B Common Stock (4) 02/06/2013   C     12,915,000   (4)   (4) Class A Common Stock 12,915,000 $ 0 400,985,000 D (2)  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
PFIZER INC
235 EAST 42ND STREET
NEW YORK, NY 10017
  X   X    

Signatures

 /s/ Matthew Lepore, Corporate Secretary for Pfizer Inc.   02/08/2013
**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 Class A Common Stock was acquired pursuant to the conversion of Class B Common Stock in an exempt transaction under the Exchange Act Rule 16b-6(b). The Class B Common Stock was converted into Class A Common Stock on a one-for-one basis and had no exercise or conversion price.
(2) Pfizer Inc. may be deemed a director of the Issuer on the basis of its relationship with five of the directors of the Issuer.
(3) Pfizer Inc. disposed of 99,015,000 shares of Class A Common Stock in exchange for outstanding debt obligations of Pfizer Inc. The debt obligations were valued at their fair market value, and the fair market value of the debt obligations exchanged equaled $25.038 per share of Class A Common Stock exchanged.
(4) Each share of Class B Common Stock held by Pfizer Inc. or one of its subsidiaries will be convertible into one share of Class A Common Stock at any time but will not be convertible if held by any other holder.

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