Answer:
Die without me, never thank me. Walk right through me, never feel me. What am I?
I am the state when a person is holding a person inside
I come without being fetched at night hides away as soon as daylight strikes. Although I may look small I am much mightier than what you can imagine.
I have thirteen hearts but no body or soul.
I am the kind of fish that chases a mouse.
Give it food and it will live, give it water and it will die.