Roads, cities and farms have reshaped much of the natural world. For decades, scientists believed those physical changes ...

Being a loner isn’t un-herd of for these four-legged seniors. New research shows that it is in an animal’s nature to isolate as they age — but unlike the known detriments for humans, breaking away ...

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Groundbreaking study shows machine learning can decode emotions in seven ungulate species. A game-changer for animal welfare? Can artificial intelligence help us understand what animals feel? A ...

Coconut crabs are massive. Up to three feet in diameter, they scuttle across remote tropical islands in the western Indo-Pacific Ocean, cracking open coconuts like they’re made of butter, eating ...

While we are the only species to scrutinize our reflections in a mirror every day, we are not the only ones to recognize ourselves in reflective surfaces. These mixed results have led researchers to ...

When a wild orangutan in Sumatra recently suffered a facial wound, apparently after fighting with another male, he did something that caught the attention of the scientists observing him. The animal ...

Animal testing remains a fundamental part of biomedical research. But as funding evaporates, mice, rats and even monkeys may be euthanized. By Emily Anthes On April 1, the Trump administration’s ...

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Chaco and his friend, Dr. Banner (a green iguana), are joined by Snowcap, a bunny that will actually be up for adoption at ...