K.H.
I know you got a lot of responses already....but I couldn't resist.
My older brother has 3 boys...I have an only child girl...
He once tried to play with her. He felt awful for making her cry, but her beloved cuddle bunny doesn't wrestle or like to be "body slammed". It was hilarious to talk about it years later.
It is a proven fact...
In a controlled environment, observing the difference between little boys and little girls when given a new object....
Statistically, little boys are more likely to experiment with it like a little boy....can I bite it? Change the form? what kind of noise does it make when I bang it on the ground? and for some...how far can I throw it?....and many other more rough observations.
Little Girls want to see how it feels against their cheek, smell it, see if its cuddly, or relate it somehow to a pet or living being.
There are always exceptions...but statistically....you have a normal little Boy.