It was not planned, but I have collected 4 videos of my granddaughter laughing throughout her first year of life: one at 3 mo., one at 6 mo., one at 9 mo., and one at a year old. I watch these about once a month - and I laugh every time! What is it about laughter that is so contagious? Especially when its a child laughing? I can't get enough of it! Here's a link to her video's:
I wonder what makes an infant laugh... why is it that one particular day they seem to find a particular antic hysterical and the next day they will yawn at the same thing? I guess it doesn't really matter why, just matters that they laugh!!