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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The original contract between the NHS and Crawford is publicly available, but has been heavily redacted

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"It makes you feel a better person," he says.

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