Their world is more detailed

As the control of eye movements improve, your baby now starts to develop a three-dimensional view of the world^[1].

At 5 months of age, babies have developed the ability to see in colour^[1] .

Infants between 5 and 7 months of age can distinguish between the facial expressions of happiness, anger, fear, and surprise^[2].

At about 8 months old, most babies start crawling. Crawling helps to further develop coordination between the eyes, hands, feet, and rest of the body^[1] .