Answer:
I am an activity dogs are very good at when a ball is thrown.
2 in a corner 1 in a room 0 in a house but 1 in a shelter.
I have a little house in which I live all alone. My house has no doors or windows and if I want to go out I must break through the wall.
I can fall off a building and live but in water I will die.
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk