A Levite and his concubine

[abaris]

Children are selfish, because they have poor impulse control and still developing cognitive faculties. But that doesn't mean that they are exclusively selfish, or don't possess some rudimentary concept of fairness, which is also demonstrated through psychological studies. Hell, this is even true of monkeys; there are studies that show certain types of chimp understand fairness.

A similar experiment has been carried out with dogs and has shown, they also have a concept of fairness. The scientists ordered two of them to give paw and rewarded them with a treat. When one of them didn't receive the treat after a time, he simply went on strike.