Science question

For the biology majors among you: do three-year-old boys have more testosterone than two-year-old boys?

And the reason I ask, of course, is because the newest thing in this house is bragging. There's the classic "Mom! I can run fast! Look how fast I can run! I'm faster than a badger!"

And the numerically challenged "I have FOURTEEN raisins! That's more than you, Mom. You only have FIFTY raisins."

And the somewhat puzzling but clearly condescending "Why do you not know what icy stripes are? You don't even know what penguins are." (addressed to my long-suffering coworker, Annie, who had to admit that, indeed, she did not know what icy stripes were. But she says she DOES know what penguins are).

And this afternoon's "Look mom, I can jump in between these blocks so faster than anyfing in the whole wide world! Watch! Look at that! Mom! Could you not believe your eyes?"

And finally, as we were walking along this evening in our neighborhood and he saw a car with a bent fender: "Look at that. That's busted, haha. Those people should take that to a mechanic. They should bring it to me when I'm older and I would spraypaint it and they would give me fifty-EIGHTY dollars."

Yup. My kid's going to be a high-paid car body repairman. Sweet.