Humans are biological organisms. We need energy from our environment which we take through our lungs and digestive tracts. Our ability to digest a wide variety of foods, including both vegetables and meat has obvious survival advantage and increases the species range of habitats. In recent centuries, human societies have changed in the way they obtain food.
Humans reproduce sexually and females do not show a visible estrus. Family units care for care for our young. Family relationships usually last throughout the individuals' life span.
Biological organisms monitor the world via their sense organs. Of the sense organs that have evolved, humans have five. Touch and taste require contact. Hearing and smell do not require contact but are limited in range and operate only in air. They do not help us observe the sun, moon and stars. Sight has the greatest range and allows us phenomena beyond planet Seventy percent of our sense input is visual. For none of the five senses do humans have the most sensitive or accurate ability to monitor when compared to other species.
The brain is the one organ that appears to be more developed in humans than any other species. In addition to coordinating the various internal organs to keep you alive and running properly, our brains coordinate incoming sense data from our senses. Brains use input to create mental images of their environments. The human brain appears to do this more elaborately than in any other species. Our mental images of reality include past, present and future. Images of "self" and "other" also appear to be more developed than in any other species.
While humans may not have a biological feature that is "special" only unto our species, there are a number of things we do better than other species. We assume these play a major role in explaining our behavior patterns.