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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Same Poop, Different Results: At-Home Gut Health Tests Are Wildly Inconsistent. New research has found that different gut health testing companies can provide wildly different results from the same fecal sample.。关于这个话题，快连下载安装提供了深入分析

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