I'm not really sure how our system started. We've been married 16 1/2 years - it just kind of evolved?
Dh washes the clothes - I fold and put away.
We trade off cooking and doing dishes. Whoever cooks, other one does dishes.
I generally do the dusting, dh likes to vaccuum.
I pay the bills and let the dogs out, dh takes care of the mowing and yardwork.
Ds is 8. He was given two chores this year... remind mom to get on the treadmill every night and make sure the dogs have food. Let's put it this way... I haven't lost any weight yet... and the dogs would have starved if we relied on him.