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hyenas in Medical News

Females avoid incest by causing male relatives to leave home

...h (IZW) in Berlin, Germany, have found that female hyenas avoid inbreeding with their male relatives by givi...ting with them. Like most mammals though, male hyenas do not contribute to the rearing of their offsprin...we were able to monitor the decisions made by male hyenas in all eight resident hyena groups on the floor of...
hyenas in Biological News

Spotted hyenas can increase survival rates by hunting alone

EAST LANSING, Mich. Recent research by Michigan State University doctoral student Jennifer Smith has shed new light on the way spotted hyenas live together and more importantly hunt for their food alone. In a paper recently published in the journal Animal Behaviour , Smith, a student in MSU...

Neandertal femur suggests competition with hyenas and a shift in landscape use

Analysis of approximately 41,000-year-old human remains found in France suggests that Neandertals may have become regionally mobile earlier than scientists once thought. Cédric Beauval and colleagues from Université Bordeaux 1 in France, Max Planck Institute in Germany, and Washington University...

Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes

...S LAUGH To human ears, the laughs of individual hyenas in a pack all sound the same: high-pitched and sta...d time. Rather, field biologists have noticed that hyenas make the sound when competing for food. The giggle... his colleagues analyzed sounds made by 17 spotted hyenas kept in captivity. They developed an algorithm tha...

Research uncovers surprising lion stronghold in war-torn central Africa

... are taken. He hopes the paper will serve as a call to action. "I don't want to see lions disappear from Queen Elizabeth National Park the way that hyenas almost did, and the way cheetahs were eliminated from parts of Uganda," he says. "That's a fate we need to avoid." ...

New book further supports controversial theory of 'Man the Hunted'

... Sussman argues. The predators living at the same time as Australopithecus afarensis were huge and there were 10 times as many as today. There were hyenas as big as bears, as well as saber-toothed cats and many other mega-sized carnivores, reptiles and raptors. Australopithecus afarensis didn't have tool...

Killer whales, blind bats, discriminating dolphins, mating birds

... will report on new results from recent studies of hyenas in the field. To decipher the meaning of these..., Suzanne Page and Steve Glickman, presented adult hyenas with three objects: unfamiliar spotted hyena cubs,...periments. The cubs elicited more groans from more hyenas than other objects, and the groans elicited by oth...

Birth rate, competition are major players in hominid extinctions

...tubers and bones. While it had a variety of food sources, they all required the crunching, grinding force of its teeth. Unfortunately, bush pigs and hyenas had great grinding and crushing teeth, too, and went after the same food. Paranthropus could not compete because it produced one offspring a year at ...

Fishy cooperation

...ver the past decade, this ladder has been challenged by claims of high intelligence and great social complexity in other animals. For example, spotted hyenas establish hierarchies in which dominant females support the rank contests of their daughters. Bottlenose dolphins form "political" coalitions every bi...

Hyena mothers give their cubs a helpful dose of hormones

...olleagues, spent almost 10 years sampling androgen levels from free-ranging hyenas in Kenya. Androgens are hormones, such as testosterone, that control develo...l roles are reversed from what is normally found in nature--that is, female hyenas are larger, more aggressive and dominate the group. They even have deceptiv...
hyenas in Biological Definition

Carnivore

... (again not only domestic dogs , though it is debated whether they are carnivores or omnivores, but wild dogs such as coyotes and wolves etc.) hyenas and other scavengers Weasels Some skunks Polar Bears Birds of prey , including hawks , eagles , and falcons Owls Scavenge...
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