One of the highlights of the Brazil trip was seeing three baby white-tufted-ear marmosets. Marmosets are small to begin with and these three were babies so they were even smaller (about the size of the average squirrel, if that). I never did see the adults but was able to get quite a few photos of the little guys before they disappeared back into the forest. After looking at the photos, I realized that they were sticking their tongues out in about half of the shots.