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Kevin Kozicki/Image Source/Getty Images Dogs with certain kinds of behavioural problems are more likely to show improvement during training if their owners are extroverts and open-minded. After comparing human personalities and the success of behavioural training, scientists have found that introversion, close-mindedness and even conscientiousness are linked to fewer changes in some types of undesirable dog behaviour, including aggression and fearfulness. Advertisement The information could help veterinarians identify dog-owner pairs that might need more help during training, says Lauren Pow...

John Carnemolla/Getty Images Kangaroos in zoos and sanctuaries use body language to ask humans for help, much like horses and dogs do, which suggests that even wild animals can learn to communicate with humans just by being around them. This overturns previous theories that animals’ ability to communicate with humans resulted from domestication, says Alan McElligott at City University of Hong Kong. Advertisement Fifty million kangaroos – an animal family that has never been domesticated – roam freely in groups across Australia. They are so common that they are “the equivalent of deer ...