According to user Hayloo, the creature may be a Razor-backed musk turtle (Sternotherus carinatus). Referring to the turtle in the photo and several other pets, the submitter wrote, "I can't wait until they're bigger, but I'll miss them as babies."
Although pet turtles like this one are cute, they may also carry Salmonella on their skin and shells. The U.S. Food and Drug Administration recommends that consumers avoid purchasing small turtles for pets or as gifts. They also suggest, "[Keeping] reptiles and amphibians out of homes with children under 5 years old, the elderly, or people with weakened immune systems."