What was the main difference between ancient people and animals?

In the primitive period, it was difficult to distinguish ordinary animals from cavemen, since both of them were mainly guided by the survival instinct, which greatly influenced their way of life. True, the main difference between them was that the ancient man from the earliest times began to make tools for his needs: a stick, a chopper, a pointed tip, and so on. Later, speech and social organization – childbirth, families – became a significant difference between animals and humans.