The online pet shop surprises customers with oil paintings of their furry friends, a move the company says wins them customers for life. It's one of the more than 1,000 free paintings that Chewy sends to select customers each week — even during the pandemic — tapping into people’s obsession with their fur children and, it hopes, winning customers for life. Amazon and Chewy dominate the online pet supplies industry, with Amazon's market share at more than 50% and Chewy's at 34%, according to retail consulting firm 1010data. Chewy sends new customers handwritten notes and all shoppers get snail-mail holiday cards. Chewy says it rejects artwork that doesn’t look enough like the pet or sends it back to be reworked.