Replying to BIG FOOR

so i am watching monster quest which is probably the coolest show in the world. but it was about big foot. i have had an encounter i think with big foot. so i was with my friend and we were in like 6th grade and we were lighting off fire crackers by a river. we lit them all off. so i ran to my house to get more and when i was on my way back i heard a deep scream. my friends at the river heard the scream too. when i got there they started running back to the house. when we got there we had no idea what it was. on monster quest they played a sound that they made it and gave me chills. here is a video of what we heard. http://www.youtube.com/watch?v=_HFzqBF0BUc