<Page> EXHIBIT 12.1 PETCO ANIMAL SUPPLIES, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in thousands) <Table> <Caption> Fiscal Year Ended --------------------------------------------------------- Jan. 31, Jan. 30, Jan. 29, Feb. 3, Feb. 2, 1998 1999 2000 2001 2002 -------- -------- -------- ------- ------- Earnings: Earnings (loss) before income taxes and extraordinary item $ (18,667) $(2,815) $38,588 $(14,101) $(12,074) Equity in loss of unconsolidated affiliates -- -- 1,254 1,767 3,083 Add fixed charges (from below) 20,745 26,812 32,137 50,431 70,426 --------- ------- ------- ------- -------- Adjusted earnings (loss) 2,078 23,997 71,979 38,097 61,435 ========= ======= ======= ======= ======== Fixed charges: Interest on indebtedness 3,118 6,894 9,799 24,522 41,449 Interest factor on lease rentals 17,627 19,918 22,338 25,909 28,977 --------- ------- ------- ------- -------- Total fixed charges 20,745 26,812 32,137 50,431 70,426 ========= ======= ======= ======= ======== Ratio of earnings to fixed charges -- -- 2.24x -- -- ========= ======= ======= ======= ======== Deficiency of earnings to cover fixed charges 18,667 2,815 -- 12,334 8,991 ========= ======= ======= ======= ======== </Table>