During the online pet-supply company's first-quarter earnings call. Chewy's (CHWY) chief executive probably got the toughest question of the day from his chief financial officer, David Brenner. 💵💰Don't miss the move: Subscribe to TheStreet's free daily newsletter 💰 "Sumit,

Chewy grew sales 8% year over year, although its gross profit margin on those sales inched lower, and its net profit margin declined 30 basis points to a slim 2%. That would probably be fine if Chewy had actually earned $0.35.

Chewy stock was falling in premarket trading Wednesday even after the pet-supply e-commerce company posted better-than-expected earnings for its fiscal first quarter. The company reported adjusted earnings of 35 cents a share on $3.