Researchers document second case of 'Down syndrome' in chimps

Japanese researchers have confirmed the second case known to science of a chimpanzee born with trisomy 22, a chromosomal defect similar to that of Down syndrome (or trisomy 21) in humans. The report on Kanako, a 24-year-old ...

How satellite data changed chimpanzee conservation efforts

Approximately 345,000 or fewer chimpanzees remain in the wild, according to the International Union for the Conservation of Nature, a substantial decline from the more than two million that existed a hundred years ago. Humans' ...

Chimpanzees recognise one another from their rear ends

It is important for social animals to be able to recognise one another quickly. Humans are able to recognise each other immediately from their faces. Faces are also important for chimpanzees, but a new study by neuropsychologist ...

US government ends research on all chimpanzees

Chimpanzees will no longer be used for US government research and the remaining 50 chimps in federal custody will be sent to a sanctuary for retirement, health authorities said.

Early maternal loss has lifelong effects on chimpanzees

Wild-caught chimpanzees, who were orphaned and imported from Africa in their early infancy, exhibit an impaired social behaviour also as adults. So far long-term effects of early traumatic experiences on social behaviour ...

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