An animal called a woolly monkey seems like ... species—the Peruvian yellow-tailed and the common (or brown) woolly monkey. The gray, Columbian, and silvery woolly monkeys were reclassified ...

Dark brown marks, described by researchers as “presumably scars,” dot its body. The coloring of Tesoro’s caecilians varies by their size. Smaller animals are “uniformly dark gray” while ...

Adult: gray and yellow areas of underparts fairly bright, with abrupt gray-yellow contrast on breast. Outer pairs of tail feathers extensively rufous on inner webs; dark shaft stripes and rufous ...