<Page> EXHIBIT 12.1 PETCO ANIMAL SUPPLIES, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in thousands) <Table> <Caption> Fiscal Year Ended 39 Weeks Ended -------------------------------------------------------- -------------------------- Feb. 1, Jan. 31, Jan. 30, Jan. 29, Feb. 3, October 28, November 3, 1997 1998 1999 2000 2001 2000 2001 ------- -------- -------- -------- ------- ----------- ----------- Earnings: Earnings (loss) before income taxes and extraordinary item $(16,231) $(18,667) $(2,815) $38,588 $(14,101) $(32,167) $ 2,947 Equity in loss of unconsolidated affiliates -- -- -- 1,254 1,767 1,290 2,505 Add fixed charges (from below) 16,535 20,745 26,812 32,137 50,431 30,303 53,464 -------- -------- ------- ------- ------- -------- ------- Adjusted earnings (loss) 304 2,078 23,997 71,979 38,097 (574) 58,916 ======== ======== ======= ======= ======= ======== ======= Fixed charges: Interest on indebtedness 2,779 3,118 6,894 9,799 24,522 11,214 32,037 Interest factor on lease rentals 13,756 17,627 19,918 22,338 25,909 19,089 21,427 -------- -------- ------- ------- ------- -------- ------- Total fixed charges 16,535 20,745 26,812 32,137 50,431 30,303 53,464 ======== ======== ======= ======= ======= ======== ======= Ratio of earnings to fixed charges -- -- -- 2.24x -- -- 1.10x ======== ======== ======= ======= ======= ======== ======= Deficiency of earnings to cover fixed charges 16,231 18,667 2,815 -- 12,334 30,877 -- ======== ======== ======= ======= ======= ======== ======= </Table>