Austrian researchers say they've found the first known example of tool use by cattle, courtesy of a Swiss-Brown cow named Veronika. Scientists have documented a lot of animals that use tools, like ...

Sea otters are one of the few animals that use rocks and other objects to access their food, and a new study has found that individual sea otters that use tools—most of whom are female—can eat larger ...

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In parts of the ocean where sea otters face stark competition for their favorite kinds of food, some otters are getting by with the help of tools — like rocks and even glass bottles — that let them ...