Have you ever seen children quarrelling ?

i think it's funny when you see children quarrelling. I heard a radio program about two small children that were quarrelling; they were very funny, it made me laugh for a long time

Have you ever seen the chidren arguing?

I think it is so fun when you see the children are quarreling. I heard at a radio two little children are quarreling. They were so fun and I had laugh for a long time.

I'm not a sure if quarreling is usual. I've always heard "to argue" or "to fight" or "to discuss".

But some native can explain you if it's really true.