High up in the canopy of the Brazilian rainforest, clinging unsteadily to its mother's back, a wild newborn bearded capuchin monkey with a non-functioning left leg was beating the odds. Observations of the disabled infant ...
Capuchin monkeys (Sapajus spp.) are among only a few primates that use tools in day-to-day activities. In the Cerrado and Caatinga, they use stones as hammers and anvils to crack open cashew nuts, seed pods of Hymenaea courbaril ...
Plants & Animals
Nov 18, 2022
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Female white-faced capuchin monkeys living in the tropical dry forests of northwestern Costa Rica may have figured out the secret to a longer life—having fellow females as friends.
Plants & Animals
Aug 10, 2022
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Researchers have observed wild-bearded capuchin monkeys in Brazil deliberately break stones, unintentionally creating flakes that share many of the characteristics of those produced by early Stone Age hominins. The difference ...
Plants & Animals
Oct 19, 2016
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(Phys.org) —Figuring out how to survive on a lean-season diet of hard-to-reach ants, slugs and other bugs may have spurred the development of bigger brains and higher-level cognitive functions in the ancestors of humans ...
Evolution
Jun 26, 2014
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While exchanging favors with others, humans tend to think in terms of tit-for-tat, an assumption easily extended to other animals. As a result, reciprocity is often viewed as a cognitive feat requiring memory, perhaps even ...
Plants & Animals
Sep 3, 2012
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(PhysOrg.com) -- Male capuchin monkeys have been observed to urinate on their hands and then rub the urine vigorously into their fur, and now a new study by scientists in Texas suggests the behavior signals their availability ...
(PhysOrg.com) -- J. David Smith, Ph.D., a comparative psychologist at the University at Buffalo who has conducted extensive studies in animal cognition, says there is growing evidence that animals share functional parallels ...
Plants & Animals
Sep 14, 2009
16
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(PhysOrg.com) -- In the developing fetus, cell growth follows a very specific schedule. In the eye's retina, for example, cones -- which help distinguish color during the day -- develop before the more light-sensitive rods ...
Evolution
May 20, 2009
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Because literature and film so often depict nature as inherently unfair, people assume that animals live in a "dog-eat-dog world." Inequality might seem like an inevitable fact of life, but a new analysis of data for 66 species ...
Evolution
Oct 16, 2023
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