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Biology

Social Bonds and Emotional Responses in Cows

Quick fact

When cows are separated from their preferred companion—their 'best friend'—they show physiological signs of stress such as elevated heart rate and increased cortisol levels, and they may vocalize more and move around restlessly.

Why this is interesting

Have you ever noticed that some cows in a pasture always seem to hang out together? Could they actually be choosing their friends?