China's Mars rover took a selfie - Engadget
As The Verge notes, China had its Zhurong rover take a "touring group" photo by planting a remote camera and posing next to its landing platform.
The robotic explorer also snapped an expansive panorama of the site (below), a photo of the platform by itself and an unobstructed view of the Martian surface.
Perseverance sent its own selfie in early April, although it relied on its own arm rather than dropping a camera.