While animal healthcare specialist PetMed Express (NASDAQ: PETS) advertises itself as "your trusted pet expert," the stock market wasn't trusting it as a solid investment this week. According to data compiled by S&P Global Market Intelligence, the company's shares fell by 13% for the week, largely due to its lackluster quarterly results. In the third quarter of its fiscal 2023, PetMed Express booked $58.9 million in net sales, a slight drop from the $60.7 million it made in the same quarter of the previous fiscal year.