Pet supplies retailer PetSmart Inc. said Wednesday its first-quarter profit rose 12 percent on higher merchandise and service sales.

The company earned $46.3 million, or 37 cents per share, compared with profit of $41.2 million, or 32 cents per share, during the same period a year prior. Revenue increased 9 percent to $1.33 billion from $1.21 billion. The fiscal 2009 first-quarter ended May 3 and the full year ends in January.

Analysts polled by Thomson Reuters expected profit of 30 cents per share on revenue of $1.35 billion.

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