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Bonobos are just as aggressive as chimps, but there's a key difference — the female bonobosA new study of chimpanzee and bonobo groups at zoos reveals similar levels of aggression. However, scientists found stark sex-based differences between the species.
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Scientists find 2 marsupial species, thought to have gone extinct 6,000 years ago, living in the forests of New GuineaThe pygmy long-fingered possum and the ring-tailed glider, two marsupials believed to have died out thousands of years ago, are still alive in Papuan Indonesia.
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'Striking' footage captures the moment a red fox preys on a wolf pup — a behavior never seen on film beforeScientists in Italy captured a red fox entering a den as part of a project to understand wolf population dynamics in the country.
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Kazakhstan plants tens of thousands of trees in giant effort to reintroduce tigersKazakhstan planted 37,000 seedlings and cuttings in South Balkhash last year to prepare for the return of its tigers, which disappeared more than 70 years ago.
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Kanzi the bonobo could play pretend — a trait thought unique to humansPast anecdotal observations have hinted that great apes play pretend. But now, experimental research shows that our closest living relatives can keep track of imaginary objects.
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Grim photo captures polar bear mom and cubs resting in mud in summer heatAn image of polar bears napping along the Hudson Bay coast in Canada has been shortlisted for the Wildlife Photographer of the Year Nuveen People's Choice Award 2026.
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'System in flux': Scientists reveal what happened when wolves and cougars returned to YellowstoneLarge carnivores are both clashing and coexisting in the western United States. Although wolves dominate cougars and steal their prey, cougars' shift from elk- to deer-heavy diets, paired with a rugged landscape for escape, might help cougars avoid violent wolf encounters.
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'Part of the evolutionary fabric of our societies': Same-sex sexual behavior in primates may be a survival strategy, study findsA new study comparing 59 species of primates linked same-sex sexual behavior to scarce resources and more predators in socially complex species. The findings show diverse sexual behaviors are common — and likely beneficial in primates.
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Coyote scrambles onto Alcatraz Island after perilous, never-before-seen swimExperts have reacted to a viral video of a coyote swimming to Alcatraz Island in what is a surprising first for the San Francisco Bay Area.
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