March 9, 2004 Tomas W. Fuller C/o VCA Antech, Inc. 12401 West Olympic Boulevard Los Angeles, California 90064-1022 Dear Tom: Reference is made to the employment agreement between you and VCA Antech, Inc. ("VCA") dated September 20, 2000 (the...

                                                                   EXHIBIT 10.22

                                VCA ANTECH, INC.
                          00000 XXXX XXXXXXX XXXXXXXXX
                       XXX XXXXXXX, XXXXXXXXXX 00000-0000

                                                                  March 9, 2004

Xxxxx X. Xxxxxx
C/o VCA Antech, Inc.
12401 Xxxx Xxxxxxx Xxxxxxxxx
Xxx Xxxxxxx, Xxxxxxxxxx 00000-0000

Dear Xxx:

Reference is made to the employment agreement between you and VCA Antech, Inc.
("VCA") dated September 20, 2000 (the "EMPLOYMENT AGREEMENT"). In accordance
with the loan prohibitions of Section 402 of the Xxxxxxxx-Xxxxx Act of 2002, you
and VCA hereby agree that the terms of Section 4.3 of the Employment Agreement
which permit you to exercise options by the delivery of a promissory note in the
amount of the exercise price are hereby deleted.

                                            VCA Antech, Inc.

                                            By:  /s/ Xxxxxx X. Xxxxx
                                                 -------------------------------
                                                  Xxxxxx X. Xxxxx
                                                  Chief Executive Officer

Acknowledged and Agreed
to this 9th day of March, 2004
/s/ Xxxxx X. Xxxxxx
---------------------------
Xxxxx X. Xxxxxx