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Primates are placental mammals that include gorillas, monkeys and chimpanzees, as well as humans. Other than humans, primates are found mostly in Central and South America, Africa, and South Asia.

Are chimpanzees evolving in the wild?

Until now, no one has documented a definite case of chimpanzees using tools to hunt in the traditional sense. Find out what a new study on chimpanzees may reveal about human evolution.

Orangutans Can Nurse for 20 Percent of Their Lives

Orangutans nurse for longer than previously thought, a new study finds. Read this HowStuffWorks article for more on orangutan nursing. See more »

Wild Lemurs Get Their Own Facial Recognition Software

Do all lemurs look the same to you? HowStuffWorks looks at LemurFaceID which can tell them apart. See more »

Marmosets Have Excellent Hearing, and That Might Help Improve Tech for the Deaf

A new study examines how sound is processed in the brains of marmosets, which have outstanding pitch awareness. Learn more at HowStuffWorks Now. See more »

Monkeys Have the Anatomy for 'Human' Speech, But Not the Brains

Can monkeys and apes talk? Learn more about primate speech abilities and vocal anatomy in this HowStuffWorks Now article. See more »

Aging Bonobos Experience Vision Deterioration Just Like Humans Do

Bonobos develop farsightedness as they age in the same way humans do. Learn more about bonobo vision in this HowStuffWorks Now article. See more »

'Cool Girl' Female Macaques Get More Grooming Than Less-popular Ladymonkeys

How does social status influence grooming? Learn more on macaque grooming and social status in this HowStuffWorks Now article. See more »

Watch Newborn Monkeys Smile in Their Sleep Just Like Human Babies

Do baby monkeys smile in their sleep? Learn more about a new primate study in this HowStuffWorks Now article. See more »

Young Lemurs Refuse to Sing the Family Song

Young indris, critically endangered lemurs in Madagascar, sing discordantly in their family choirs. HowStuffWorks Now explains why. See more »

Why There Are More Sumatran Orangutans Than We Previously Thought

How many orangutans live in the wild in Sumatra? Learn more about orangutan population in the wild in this HowStuffWorks Now article. See more »

New Study: Monkeys Can Drive Robotic Wheelchairs Using Thought Control

A new study shows monkeys can control robotic wheelchairs with their minds. Learn more in this HowStuffWorks Now article. See more »