A new study has found that individual sea otters that use tools — most of whom are female — are able to eat larger prey and reduce tooth damage when their preferred prey becomes depleted. Image by ...

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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 ...

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 ...