Old World monkeys are primates of the family Cercopithecidae, a diverse and widespread group native to Africa and Asia. They are characterized by narrow, downward-facing nostrils (catarrhine condition), non-prehensile tails (when present), and ischial callosities that facilitate sitting. Cercopithecidae is divided into two subfamilies: Cercopithecinae (generally omnivorous, often cheek-pouched species such as macaques and baboons) and Colobinae (primarily folivorous, foregut-fermenting species such as colobus and langurs). Members exhibit complex social structures, marked sexual dimorphism in many taxa, and play important roles as model organisms in behavioral, ecological, and biomedical research.
Yuji, a 6-week-old patas monkey in Mexico, wakes up every day clinging to a stuffed dog. More than a toy, this plush companion acts as a surrogate mom after the tiny primate was rejected by his own mother, Kamaria, a first-time ...
Plants & Animals
8 hours ago
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Just because a female olive baboon has mated with a specific male doesn't mean he will be the father of her offspring. According to a new study published in PLOS Biology, mate selection continues long after copulation as ...
A critically endangered monkey has given birth just months after pioneering surgery saved her from undergoing an amputation. Masaya, a 15-year-old roloway monkey at Chester Zoo, had a golf-ball-sized mass removed from her ...
Plants & Animals
Mar 21, 2026
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Wild animal species respond very differently to human development, and as a result, they use ecological corridors in agricultural and urban areas in distinct ways. This emerges from research in Botswana by ecologist Marlee ...
Plants & Animals
Mar 5, 2026
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Little Punch, a seven-month-old Japanese macaque living in the Ichikawa City Zoo in Japan, has captured hearts on the internet. Abandoned by his mother in the first few days of his life and raised by the keepers at the zoo, ...
Plants & Animals
Mar 5, 2026
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A camera-trap survey conducted throughout 2025 has revealed the bewildering breadth of biodiversity hidden within the Annamite Mountains, a largely unexplored forest haven stretching for 1,100 kilometers through Laos and ...
Plants & Animals
Feb 14, 2026
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Researchers at the Helmholtz Institute for One Health (HIOH), a site of the Helmholtz Centre for Infection Research (HZI), together with an interdisciplinary team of partners, have identified the fire-footed rope squirrel ...
Ecology
Feb 11, 2026
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Artificial intelligence allows tracing the evolution of genetic control elements in the developing mammalian cerebellum. An international research team led by biologists from Heidelberg University as well as the Vlaams Instituut ...
Evolution
Jan 29, 2026
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A team of scientists from EPFL and Alaska Pacific University has developed an AI program that can recognize individual bears in the wild, despite the substantial changes that occur in their appearance over the summer season. ...
Plants & Animals
Jan 29, 2026
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Incidents that make us consider the relationship between humans and wild animals are happening all over Japan, from bear attacks to crop damage by wild animals. How should we interpret the current situation, and how should ...
Plants & Animals
Jan 26, 2026
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