Ring-tailed lemurs only live in remote and hard-to-reach areas of south and southwestern Madagascar. For years, population numbers were determined by extrapolating from limited surveys, leading some scientists to believe the primates were in steep decline. However, in 2018 and 2019, primatologists carried out an extensive population assessment and found them in 65 of the 83 sites the researchers visited—including three where the animals were thought to have disappeared. This photo was taken at the Lincoln Children's Zoo in Nebraska. #PhotoArk Photo by joelsartore