Last night I was watching animal planet and for the second teacher's pet on the show Petfinder, they had a 1.5 year old brindle boxer. She was playing with their golden retriever, they ran to the back yard and the boxer fell into the poor and sank like a rock. Dina the lady on petfinder had to dive in and save the boxer's life. I have never seen a dog sink like that before! Poor boxer, had to be scared to death!