Answer:
I'm light as a feather yet the strongest person can't hold me for more than a few minutes. What am I?
What has a head and a tail, but no body or legs?
I come with a train and go with a train and the train doesn't need me but can't go without me.
I belong to everyone. Sometimes make you happy sometimes make you sad. I will never end until the day you do.
Digital white-out.
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk