Three years ago a group of researchers asserted that dogs could do the same, using a similar experiment, but with a dog watching another dog using its PAWS or mouth to manipulate a handle.

三年前，一个研究小组断言犬类也会这么做，他们进行了类似的实验，不过是让一条狗观察另一条狗用它的爪子或者嘴巴去操纵一个把手。

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Look for off-leash dog parks, hiking trails that allow dogs and designated dog beaches if you are by the ocean.

找找可以不给狗拴链的公园，允许狗出没的小径，如果你在海边，就搜寻一下已授权让狗游玩的海滩。

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His team have tried to find such behavior in dogs — like whether a dog can learn a dog-human ball game by watching — but found none.

他的团队已经尝试在犬类中寻找类似的行为——例如狗能否通过观察学会和人一起玩球——但没有发现。

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We use a leash to walk our pet dogs, The leash keeps dog from running away or getting into trouble.

VOA: special.2009.03.29

for why you became afraid of dogs is that one day a dog came up and he was a neutral stimulus.

你之所以害怕狗,是因为，某天有只狗向你跑来,狗是一个中性刺激。

耶鲁公开课 - 心理学导论课程节选

But the presence of the dog there is a conditioned stimulus and so you grew to be afraid of dogs.

而这时狗的存在就变成了条件刺激,所以你开始对狗心生恐惧。

耶鲁公开课 - 心理学导论课程节选

If an owner thought the dog had misbehaved and then told the dog off, some dogs showed an "admonished" look, which humans then misunderstood as an admission of guilt.

BBC: Can dogs really look 'guilty'?

The orders mean pet owners can be fined for failing to remove dog faeces, not keeping a dog on a lead and allowing a dog to enter land from which dogs are excluded.

BBC: Warwick councillors vote through dog control orders

Police and local authorities already have powers to deal with irresponsible dog owners and dangerous dogs.

BBC: Jade Anderson death: Urgent call to reform dog laws