Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 05, 2013	Apr. 29, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 102,415	$ 94,683
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,916	59,709
Loss on disposal of property and equipment	755	3,245
Stock-based compensation expense	9,096	7,315
Deferred income taxes	3,022	12,907
Equity income from Banfield	(3,612)	(2,633)
Dividend received from Banfield	15,120	13,860
Excess tax benefits from stock-based compensation	(8,874)	(28,998)
Non-cash interest expense	162	293
Changes in assets and liabilities:
Merchandise inventories	(59,829)	(37,439)
Other assets	8,950	(12,239)
Accounts payable	51,897	40,359
Accrued payroll, bonus and employee benefits	(43,340)	(31,921)
Other liabilities	12,568	9,981
Net cash provided by operating activities	147,246	129,122
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investments	0	(4,027)
Proceeds from maturities of investments	2,695	3,535
Proceeds from sales of investments	125	85
Decrease (Increase) in restricted cash	690	(1,740)
Cash paid for property and equipment	(34,818)	(35,931)
Proceeds from sales of property and equipment	2,792	67
Net cash used in investing activities	(28,516)	(38,011)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from common stock issued under stock incentive plans	11,253	24,648
Minimum statutory withholding requirements	(5,685)	(21,076)
Cash paid for treasury stock	(201,328)	(174,908)
Payments of capital lease obligations	(16,655)	(15,017)
Increase in bank overdraft	3,599	6,970
Excess tax benefits from stock-based compensation	8,874	28,998
Cash dividends paid to stockholders	0	(15,416)
Net cash used in financing activities	(199,942)	(165,801)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(955)	726
DECREASE IN CASH AND CASH EQUIVALENTS	(82,167)	(73,964)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	335,155	342,892
CASH AND CASH EQUIVALENTS AT END OF PERIOD	252,988	268,928
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid	13,305	14,058
Income taxes paid, net of refunds	31,260	24,693
Assets acquired using capital lease obligations	16,346	6,801
Accruals and accounts payable for capital expenditures	25,788	28,079
Dividends declared but unpaid	$ 17,544	$ 15,237