Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

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例如，自由派智庫「布倫南司法中心」曾研究2016年大選中的12個州。該研究發現，在點算的2,350萬張選票中，僅有30起疑似非公民投票事件被提交作進一步調查。