#1. Monkeys value equality between one another.
During an experiment, 2 monkeys were given some work to do and each completed it. One monkey received a good treat, while the other got a rock.
The one that got the rock was definitely not happy.
![](https://cdn.animalencyclopedia.info/wp-content/uploads/2022/09/1-kangaroos-300x200.jpg)
#1. Monkeys value equality between one another.
During an experiment, 2 monkeys were given some work to do and each completed it. One monkey received a good treat, while the other got a rock.
The one that got the rock was definitely not happy.