Quoting justanothamotha:" They say you can't tell until around 3 from everything I find, but my younger one is approaching 3 & ... [snip!] ... lefties is not at all high - so I am sure I wasn't assuming my 2nd would be either. In fact I thought for sure he wouldn't be."
My son does EVERYTHING with his left hand. If you hand him a fork or a crayon, he will take it from his right hand to his left. That's the thing that makes me think he will be a lefty. SO and I are both righties. I just wonder if thats something to do with genetics or it just...happens.