Puv xyoo hu plig
When your child reaches a full year. You are suppose to call his/her spirit (Hu Plig). At this same time some people also "Pauj Nam Nkaum Txiv Xaa" and "Dlaws Npe Laug "
In the olden days
You only provided a cow to those of your kids who are sick, because you would tell them to get well
and if they do you will offer them a cow. So mainly the sick kids got cows while the well kids open
got a chicken.
However today since everyone is not as poor we offer cows to our children
More details to coming soon