These monkey facts were thrown together from google searches in around 2003 in memory of Geocities. Since then they have at this URL here mostly ignored, but that length of time is practically glacial in internet time. So here they remain because who are we to mess with internet history?

1. The monkeys of the world are divided into two groups: the Old World monkeys of Africa and Asia and the New World monkeys of Central and South America. Geography isn't their only difference however. Many Old World monkeys, like the apes, have long thick tails that help them balance while they swing through the forest. Whilst, many New World monkeys, like the familiar spider monkey, have tails which can grasp so they are used like hands and feet to help them swing through the treetops, and even dangle upside down while eating.
2. The squirrel monkey's brain accounts for roughly 5 percent of its body weight - the largest percentage of any other animal. The human brain, by comparison, makes up about 2.3 percent of body weight.
3. The saying "it's so cold out there it could freeze the balls off a brass monkey" came from when they had old cannons like ones used in the Civil War. The cannonballs were stacked in a pyramid formation, called a brass monkey. When it got extremely cold outside they would crack and break off... Thus the saying.
4. A monkey was once tried and convicted for smoking a cigarette in South Bend, Indiana.
5. Goeldi's monkey is considered to be closest to the callitrichid common ancestor because they have retained their third molar and give birth to only one offspring at a time.
6. Buffy tufted-eared marmosets have lower incisors ill-adapted to gouging holes in trees - instead they use them to remove bark and eat termites.
7. Buffy-headed marmosets have the largest home range of any marmoset with a known home range.
8. A few marmoset species have been seen following ant swarms in order to eat the insects they disturb.
9. Pygmy marmosets can leap up to 16 feet.
10. Some marmoset vocalizations are so high-pitched they are inaudible to the human ear.
11. The bare-faced tamarin has the smallest range of any Amazon primate, corresponding with the constant growth of the city of Manaus.
12. The saddleback tamarin is the smallest and most widely distributed tamarin.
13. Red-crested tamarins live in a park in Panama City.
14. Silvery-brown bare-faced tamarins have been observed coming to the aid of wounded troop members.
15. In the 1960s-1970s, more than 30,000 cotton-top tamarins were exported from Colombia for pets and biomedical research.
16. Golden lion tamarins were the subject of one of the first primate reintroduction programs in the early 80s, when it was discovered that there were more of them living in captivity than in the wild. The success rate of this program has been low.
17. Common squirrel monkey infants have prehensile tails. Adults do not.
18. The black squirrel monkey has the smallest distribution - only 367 square miles of Brazil.
19. While most squirrel monkeys show no sexual dimorphism, Bolivian squirrel monkeys are sexually dichromatic - with black on the females and gray on the males.
20. Red-backed squirrel monkeys may have been introduced to Central America by humans.
21. 24% of golden-backed squirrel monkeys have tested positive for malaria.
22. Studies of the brain anatomy of black squirrel monkeys showed that the occipital lobe was devoted to auditory processing and was proportionally the most extensive of all primates except humans. This may be the result of the complex vocalization system utilized by squirrel monkeys.
23. The capuchin monkey has been called the most intelligent of the New World Monkeys. It has a brain that is highly developed and large in proportion to the size of the animal itself, with an adult brain weight of 2-3 ounces. One hypothesis is that intelligence is related to subsistence strategy - the way the animal seeks its food. The capuchin relies mainly on hard-to-find foods that are only available for a short time, such as fruit and insects. This may require a larger brain and foods rich in energy to sustain it. Capuchins are masterful exploiters of their environment. They become easily bored in captivity - they explore everything within reach, often taking things apart in the process.
24. In weeper capuchins, female reproductive success seems to depend on group size, with females living in larger groups being more successful.
25. White-throated capuchins contribute to the ecology of the forest by pollinating some plants and dispersing seeds of others.
26. Tufted capuchins are skilled nutcrackers and expert frog catchers.
27. White-bellied spider monkeys eat the decaying wood and mud used by termites to build a tree nest, but they do not eat the termites. Why they eat wood is currently a mystery.
28. Spider monkeys are among the most agile of the primates, able to access fruit wherever it grows � even on terminal branches. Their ability to move with precision and ease throughout the forest canopy is probably where their common name stems from.
29. Paraguan night monkeys (azarai) are more active in daylight because of danger from great horned owls.
30. Subadult males will hoot at their territory border for 1-2 hours during a full moon to attract a mate.
31. Gray-necked owls monkeys have been used in lab studies of malaria and herpes virus.
32. Owl monkeys are widely used in lab studies of brain and behavior.
33. The barbary macaque is the only macaque to live outside of Asia, and the only monkey in Europe, introduced for sport to Gibraltar in the 18th century.
34. The rhesus macaque has adapted to life in cities. Some rhesus are fed by humans near Hindu temples in India.
35. Macaques are the most common monkey used in biomedical research.
36. Japanese macaques live at the northernmost latitude of any nonhuman primate. They are good swimmers and make use of natural hot springs to keep warm in winter. Field research on Japanese macaques revealed the first known case of cultural innovation in nonhuman primates. They have been officially protected in Japan since 1947.
37. The first free-ranging American colony of Japanese macaques was established in Texas in 1972. These have invented a new alarm call especially for rattlesnakes.
38. The endangered Sulawesi (Celebes) macaque is a favored delicacy for Christmas dinner in Indonesia. They recently underwent a name change along with the islands they live on. They are often incorrectly called "apes" because they are jet black and appear to be tail-less (actually they do have a very short tail.)
39. Pig-tailed macaques are trained to harvest coconuts.
40. The name "guenon" comes from the French word for fright. When they are excited, they expose their teeth in a grimace.
41. Greater spot-nosed guenons have been known to steal chickens from human settlements.
42. Mustached and crowned guenons have displayed a gender-related difference in diet, with males favoring fruit and females eating more leaves and insects.
43. In captivity, male agile mangabeys display significantly more aggressive behavior than females.
44. Sooty mangabeys are the only species of primate besides humans that can acquire leprosy from another member of their own species.
45. Male gray-cheeked mangabeys can erect their shoulder hair to look larger.
46. Ancient Egyptians considered hamadryas baboons to be the sacred, attendants of Thoth, the scribe of the gods.
47. Male olive baboons use infants as "social buffers" in dominance struggles.
48. Baboons are another favorite of research labs - their resistance to HIV has led to many experiments. In 1992 the liver of a yellow baboon was transplanted into a human male with HIV, who later died of infection from the surgery.
49. Studies suggest that baboons are adept at deception, utilizing the visual perspective of other individuals and using others as social tools.
50. Baboons are the only primate besides chimpanzees that have been reported to engage in cooperative hunting.
51. Hamadrayas baboons have the largest day range of any primate. They will walk up to 10km a day (farther distances have been recorded) in search of food.
52. One cognitive study showed that baboons had the ability to mentally rotate objects.
53. Gelada thumbs are more opposite their fingers than in any other Old World primate - they have the most highly developed precision grip, due to their need to pluck grass for food. Researchers have theorized that early hominids were also small object feeders, similar to geladas.
54. If need be, proboscis monkeys can swim underwater for about 66 feet.
55. Proboscis monkeys have the largest noses of any primate. There has been no obvious biological reason found for the male's big nose. It may help resonate their loud calls. One theory put forth is sexual selection - the females prefer males with big noses.
56. The spider monkey will break off heavy branches and drop them from trees to scare off intruders
57. The tail of the lion-tailed macaque can measure nearly two feet in length!
58. Monkeys have tails, apes don't.
59. A group of monkeys is called a troop of monkeys.
60. Monkeys pay each other for work performed in obtaining food.
61. Chimpanzees, gorillas and orang-utans all catch colds, but curiously monkeys do not.
62. Chimpanzees live for approximately 50 years
63. Did you know that the orang-utan is the largest fruit-eating animal in the world and that it rarely comes out of the trees?
64. During the Napoleonic wars, a ship floundered off the coast of Hartlepool, England resulting in its destruction. A monkey from a travelling circus, dressed in a little uniform, got washed ashore clinging to flotsam. The locals, never having saw a monkey or a French sailor before, assumed that this little hairy fellow was one of our Gaelic cousins. As a result he was subsequently hanged as a French spy.
65. The only golf course on the island of Tonga has 15 holes, and there's no penalty if a monkey steals your golf ball.
66. Female spider monkeys have an enlarged clitoris which resembles a penis.
67. Spider monkeys have a prehensile tail that can hold their entire body weight for long periods.
68. Only gibbons exceed spider monkeys in agility in the trees.
69. Black and White Ruffed lemurs have more black fur than those from the south.
70. Lemurs hang upside down by their feet to feed.
71. During the day the Ruffed lemur sleeps in a hollow tree curled up into a ball. It is a nimble climber, most active at dusk and during the first part of the night, when it forages for fruit.
72. Females are generally the dominant sex as they get the best choices of food, defend the group and choose whom they mate with. They are the only primates that have fox-like long, moist noses. They use their sense of smell to tell what is safe to eat and to recognize each other (other primates depend on sight).
73. Madagascar natives once believed that the black and white lemurs worshipped the sun because they often sunbathe.
74. Chimpanzees can recognise themselves in a mirror and have the ability to learn sign language.
75. Capuchin monkeys can be found in mixed species groups. In the wild they are most often found in association with squirrel monkeys. Usually the squirrel monkeys initiate the mixed group interaction, probably in order to find food more efficiently. The squirrel monkeys follow the brown capuchin monkeys to new food sources, which saves them foraging time. The association does not seem to benefit the capuchin monkeys.
76. The capuchin monkey takes its name from the Capuchin monk, whose cowl the monkeys' head-colouring resembles.
77. An adult chimpanzee is 3 - 4 times stronger than an average human.
78. A chimpanzee can learn to recognize itself in a mirror, but monkeys can't.
79. Chimpanzees are one of the few mammals that manufacture and use 'tools', such as using leaves to clean the body, twigs to gather insects, and stones to crack hard seeds. Twenty-seven different types of tool have been recognised.
80. Weighing only 350-450g, cotton top tamarins can leap up to 3 metres horizontally
81. The Hamadryas was the sacred baboon of the ancient Egyptians, and was often pictured on temples and monoliths as the attendant or representative of Thoth, the god of letters. Baboons were mummified, entombed and associated with sun worship.
82. Using a form of MRI, researchers have discovered that that brains of male marmosets -- small, tree-dwelling, monogamous Brazilian monkeys -- go through neurological processes similar to those of men when deciding how to react to the presence of an attractive female. Researcher Charles T. Snowdon of the University of Wisconsin observed high brain activity in awake, conscious marmosets in brain areas crucial for decision-making, sexual arousal, memory, emotional processing, and reward. The study suggests that even males in monogamous species go through complex cognitive processes when confronted with an attractive female.
83. Male chimpanzees try to intimidate other males with displays of dominance: slapping their hands, stamping their feet, dragging branches, and throwing rocks.
84. The scientific name for orangutan is Pongo Pygmaeus.
85. The smallest lemurs are mouse lemurs, which are only about 5 inches (13 centimeters) long, with an equally long tail. They only weigh a few ounces.
86. Chimpanzees can live about 50 years in the wild. In captivity, some chimps have lived more than 60 years.
87. The scientific name for the chimpanzee is Pan troglodytes.
88. Chimpanzees are apes, like orangutans, bonobos, gorillas, and gibbons. Apes belong to the primate order that includes lemurs, monkeys, and humans.
89. Studies have shown that rhesus monkeys are able to understand the relations that exist among the numbers 1 to 9�that is, they can understand when a number is smaller or larger than another number.
90. There are more than 30 species, or kinds, of lemur
91. When a number of orangutans come together to feed, the youngsters often play together, while the adults ignore one another.
92. The scientific name for the ring-tailed lemur is Lemur catta.
93. There are three subspecies of gorilla: mountain gorillas, western lowland gorillas, and eastern lowland gorillas.
94. The largest lemur is the indri, which measures more than 2 feet (.6 meters) long and weighs some 15 pounds (7 kilograms).
95. Mountain gorillas weigh from 200 to 400 pounds (91 to 181 kilograms).
96. Each chimpanzee has its own individual pant-hoot, a common call used in different situations
97. Lemurs live in the wild only on the African island of Madagascar and a few neighboring islands.
98. Male orangutans become fully mature at about 15 years of age.
99. Bamboo lemurs eat ... you guessed it ... bamboo! There are three different kinds of bamboo lemurs, and each eats a different part of the bamboo plant.
100. Chimpanzees forage for food about six to eight hours a day.
101. Mountain gorillas are mainly vegetarian, eating leaves, shoots, fruit, bulbs, bark, vines, and nettles.
102. Orangutan predators include tigers, leopards, and even large pythons.
103. The life span of a mountain gorilla is, in the wild, about 40 years; in captivity, up to 50 years.
104. Mountain gorilla predators are mainly humans and sometimes leopards.
105. Armed with fearsome canine teeth and weighing up to 41 kg (90 lb), male baboons are more than a match for many predators.
106. Adult orangutans are solitary animals, generally coming together only to mate.
107. the pygmy marmoset, is the world's smallest monkey, measuring just 30 cm (12 in) long, at least half of which is tail, and weighing as little as 113 g (4 oz) when fully grown.
108. Zoologists classify monkeys into three distinct families: marmosets, Capuchin-like monkeys, and Old World monkeys. Marmosets and Capuchin-like monkeys are found only in Central and South America and are known collectively as New World monkeys.
109. Ring-tailed lemurs spend more time on the ground (and less in the trees) than any other species of lemur.
110. The scientific name for the mountain gorilla is Gorilla gorilla beringei.
111. A lemur called an aye-aye uses its long third finger to pull insect grubs from underneath tree bark.
112. The plants mountain gorillas eat provide them with most of the water they need.
113. A kind of lemur called a sifaka can leap about 30 feet (9 meters) from tree to tree.
114. In the Malay language, orangutan means person of the forest.
115. A fully-grown male mountain gorilla is twice the weight of a mature female.
116. A male mountain gorilla may stand as tall as six feet (two meters).
117. About 97 percent of an orangutans genetic makeup is the same as a humans.
118. Capuchins, for example, sometimes fend off inquisitive predators by urinating on them from high above or by jumping up and down to make dead branches fall on the predators.
119. One of the lemurs main predators is the catlike fossa, the largest carnivore in Madagascar.