Knoji, a provider of consumer reviews and information, released a new consumer guide comparing online pet product retailers.

The report compares retailers such as PetSmart, Petco and PetCareRx to help consumers choose the store that's right for them.

According to the report, PetSmart has an easy return policy, while consumers can earn PetCareRX points for discounts on different products; consumers can earn money back on purchases with Petco's Pals rewards and Petco helps companion animals by donating nearly US$15 million per year to the Petco Foundation.

The report's complete findings can be read online .