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Income Taxes
3 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]  
Income Taxes
Income Taxes

The effective tax rate of income attributable to VCA for the three months ended March 31, 2014 was 39.5%, as compared to 38.9% for the year ended December 31, 2013. The increase in the effective tax rate was primarily due to a decrease in income related to our Canadian operations which are taxed at a lower rate.