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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Владимир Путин и Дональд Трамп. Фото: Гавриил Григоров / РИА Новости

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"I remember waking up in the morning and seeing his little face, with his little dummy in, and it felt like I needed to wake up from a dream.