Cows have best friends

A study conducted by a doctoral student at the University of Northampton suggests that cows form close friendships with each another.

They measured the cows’ heart rates and cortisol levels (an indicator of stress) while they were held in isolation for half an hour, and compared these readings to when they were together.

The results found that cattle’s stress levels were reduced when they were in the company of a preferred partner in comparison to when they were alone or paired with a random cow.

These findings could benefit dairy farmers by helping them keep their herds happy and calm, since stress levels can affect milk production.