UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

(Amendment No. 1)

(Mark One)

For the quarterly period ended December 27, 2003

or

For the transition period from              to             

Commission File Number: 0-20242

CENTRAL GARDEN & PET COMPANY

3697 Mt. Diablo Blvd., Suite 310, Lafayette, California 94549

(Address of principal executive offices)

(925) 283-4573

(Registrant’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    x  Yes    ¨  No

Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Exchange Act).    x  Yes    ¨  No

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

INTRODUCTORY NOTE

This amendment on Form 10-Q/A is being filed to correct certain section references in “Part I. Financial Information - Item 4. Controls and Procedures” and to file new officers’ certifications. This amendment is not intended to update other information in this quarterly report as originally filed, except where specifically noted.

“Part I. Financial Information - Item 4. Controls and Procedures” in the original Form 10-Q is deleted in its entirety and replaced with the following:

Item 4. Controls and Procedures

(a) Evaluation of disclosure controls and procedures. Our Chief Executive Officer and Chief Financial Officer have reviewed, as of the end of the period covered by this report, the “disclosure controls and procedures” (as defined in the Securities Exchange Act of 1934 Rules 13a-15(e) and 15d-15(e)) that ensure that information relating to the Company required to be disclosed by us in the reports that we file or submit under the Exchange Act, is recorded, processed, summarized and reported in a timely and proper manner. Based upon this review, we believe that the controls and procedures in place are effective to ensure that information relating to the Company that is required to be disclosed by us in the reports that we file or submit under the Exchange Act is properly disclosed as required by the Exchange Act and related regulations.

(b) Changes in internal controls. There were no significant changes in our internal controls during our last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

“Part II. Other Information - Item 6. Exhibits and Reports on Form 8-K” in the original Form 10-Q is deleted in its entirety and replaced with the following:

PART II. OTHER INFORMATION

Item 6. Exhibits and Reports on Form 8-K

(a) Exhibits

(b) There were no reports on Form 8-K filed during the quarter ended December 27, 2003.

The following current report on Form 8-K was furnished during the quarter ended December 27, 2003:

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunder duly authorized.

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