SCIENCE
Use our resources to learn about “6 Marvelous Monkeys”!
Teachers, scroll down for a quick list of key resources in our Teachers’ Toolkit.

Photograph by Cliff, courtesy Wikimedia. CC-BY-2.0
Discussion Ideas
- According to Nat Geo Kids, Milton’s titi is a “never-before-seen” primate. What’s a primate?
- A primate is a type of mammal. There are many different species of primates, including lemurs and lorises, monkeys and apes, and even hominins—like humans!
- Milton’s titi is a New World monkey. New World monkeys such as titis, capuchins, and spider monkeys, generally have flatter noses with more sideways-facing nostrils than Old World monkeys. Compare the noses of this titi (New World monkey) with this langur (an Old World monkey) for an example.
- According to Nat Geo News, the region of Brazil where Milton’s titi was discovered has been explored for more than a century. How did the monkey go undiscovered for so long?
- Most of the monkey’s habitat, a small region of lowland rain forest, remains undeveloped and protected as either conservation area or land belonging to indigenous people. Not a lot of biologists have done extensive field work there.
- Previous explorers probably thought Milton’s titi belonged to one of the other 30 species of titi monkeys indigenous to South America.
- What makes Milton’s titi distinct from other titis?
- Milton’s titi has unique coloring, what biologists call “chromatic characters of the fur“: light gray line of the forehead, dark ocher sideburns and throat, dark gray portions of the torso and flanks, and uniformly orange tail.
- Is Milton’s titi an endangered species?
- Biologists say it’s too soon to tell—not enough research has been done on the monkey’s population or range to conclude if it meets any criteria for endangered species.
- Take a look at our handout “6 Marvelous Monkeys.” How does the new discovery impact this handout?
- It needs to be updated! The “Newest Found!” monkey on the list, the lesula, was officially identified in 2012.
TEACHERS’ TOOLKIT
Nat Geo: New Monkey Discovered
Nat Geo: New Titi Monkey Found: Fire-Tailed, With Sideburns
Nat Geo: 6 Marvelous Monkeys
(extra credit—don’t worry, it’s in both Portuguese and English) Papéis Avulsos de Zoologia (São Paulo): New species of titi monkey, genus Callicebus Thomas, 1903 (Primates, Pitheciidae), from Southern Amazonia, Brazil