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The Five senses are there at birth, hearing develops during the last trimester of pregnancy, Vision is the least mature, and smell, taste, and touch all function at birth.
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By 3 months old, most babies have sufficient muscle control to be lap sitters, with support from the parent.
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By 5 months babies become able to use their arms, then legs to inch forward on their bellies. They also develop some fine motor skills.
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By 6 months old babies can sit unsupported.
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Between 8 and 10 months after birth, most infants can lift their midsections and crawl.
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By 10 months babies can stand momentarily unsupported.
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By 12 months children can walk unassisted