Three- and 4-year-olds are often fascinated with and more than happy to reveal their private parts. Here's why. On a recent evening, my cousin's 4-year-old son ran into the closet after his bath. Suddenly, he threw open the door and proudly exclaimed to his mother and twin sister, "Look at my penis! Many 3- and 4-year-olds are oblivious to the notion that their private parts should be, well, private. Preschoolers often develop a fascination with their genitals and -- as with everything else they're learning about -- are eager to share their discoveries with others.

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If the earth were visited by aliens, they could probably figure out the majority of human anatomy. What did you do with my clothes and where are you planning to put that probe? Curiosity is a serious motivator. And right now curiosity is a super good thing for your kid. If your kid is potty training, they suddenly have super easy access to the parts below the belt. They are watching us to see how they should react to things.
Curiosity Pulled The Peen
This can happen at any age, but it can start as early as 4 to 6 months, after babies gain control of their limbs and hands and start exploring their bodies. They'll grab at their ears, feet, and genitals — and for baby boys, the penis is an interesting and easy-to-reach body part to go for. He's also the son of William Sears, the pediatrician and attachment parenting guru. It's also normal for your baby to experience "pleasant sensations," as Sears puts it. You may notice signs of this, like facial flushing and further touching. On the other hand, a few rubs may satisfy your baby's curiosity, and he may stop in infancy and then later pick back up where he left off.
Parenting Resource. Q: OK, my son is now 3 years old and has started to play with his penis. I have never seen this topic discussed.