According to the search results, touch is the first sense to develop in a baby, with development starting at around 8 weeks in utero. The sense of touch initially begins with sensory receptor development in the face, mostly on the lips and nose. Over the next several months, touch receptors begin to develop on other parts of the body, such as the palms and soles by 12 weeks and the abdomen by 17 weeks. By about eight months, a baby can identify a nearby object by touch alone.

While babies are born with all five senses (sight, hearing, smell, taste, and touch), some of these senses are not fully developed at birth. For example, newborns can detect light and dark but cant see all colors, and they are able to focus only at close range, about 8 to 10 inches. Newborns also have a strong sense of smell and prefer the smell of their own mother, especially her breastmilk. Babies prefer sweet tastes over sour or bitter tastes, and they can hear and startle in response to loud sounds.

In summary, touch is the first sense to develop in a baby, with development starting at around 8 weeks in utero. While babies are born with all five senses, some of these senses are not fully developed at birth.