This incredible photograph of a lion has people doing a double-take online. At first glance, in the picture, the lion appears to have swallowed the entire head of another large African feline, a cheetah. However, upon second glance, you can see that the image is actually an incredible optical illusion—incredible enough to have caused a stir on Instagram. Wildlife photographer Saeed Aljafar captured the lucky shot at Masai Mara National Reserve in Kenya. The 583-square-mile reserve is home to between 850 and 900 lions, as well as elephants, hippos, zebras, and yes—cheetahs too. On Jan. 20, Aljafar posted the photo to Instagram, describing the encounter in the caption. “Cheetahs entered the lion’s territory in the late evening,” he wrote. “The male lion started pursuing them, attempting to get them out. While one of the cheetahs was sitting in the skyline, the lion remained to rest, and it appeared as though …