I understand the actual knob on a breast for a feeding purpose . Wouldn’t just that be enough ? Why the areola around it especially with a different shade of colour to the rest of the breast ?
In: Biology
They also excrete a scent that helps the newborn find the breast. It’s similar to the scent of amniotic fluid.
Edited to add that the substance excreted also helps keep the nipple lubricated to help avoid painful cracking and sores while breastfeeding is established.
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