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Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
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ScienceShot: Doggie Doolittles
7 October 2011 4:07 pm
Young children often misinterpret a dog's snarling face as a smile, which may be one reason why kids suffer a high number of dog bite injuries. But youngsters 6 to 10 years of age have no trouble understanding the threat in a dog's aggressive bark, researchers report in the current issue of Applied Animal Behaviour Science. The scientists tested 30 children and ten adults, asking them to judge a dog's emotions by listening to its barks in three different situations: alone, facing a stranger at a gate, and when playing. Lonely barks are high-pitched and slowly repetitive, aggressive ones are deeper and fast, and happy barks are slow and rough. Only adults and 10-year-old children correctly understood the playful bark, and only adults and children ages 8 through 10 had no trouble recognizing barks that were lonely. But adults and children of all ages (and even kids whose families did not own dogs) scored correctly on the aggressive barks. Thus, children encountering strange dogs should ignore their facial expressions, the scientists say, and instead listen to what they have to say.
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