Picture writing the numbers 1 to 5 in a horizontal line, from smallest to largest. Where did you put 1? If you placed 1 on the left and 5 on the right, you share this preference with most humans.
Humans are not alone in this preference. Some other primates, and even some birds, also order small-to-large quantities from left to right. Although, some animals do prefer to order quantities from right to left.
