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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Bell's womb transplant operation lasted 10 hours and took place at The Churchill Hospital in Oxford in June 2024, before the couple received IVF treatment some months later - followed by embryo transfer - at The Lister Fertility Clinic in London.。safew官方版本下载是该领域的重要参考

Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10217-z

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