Answer:
What force and strength cannot get through I with my unique teeth can do.
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word. What am I?
A sport with love and service played by singles and pairs.
Ten men's strength, ten men's length. Ten men can't break me, yet a young boy walks off with me. What am I?
I am used for light yet I am solid. Without me you would feel enclosed. I hate being touched especially with a lot of force. I like to be in buildings.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.