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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Read the full story at The Verge.

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Customers had to pay a deposit for the sturdy glass bottles. They then got this money back when they returned them to the shop. And the bottles would be washed and refilled over and over again.