Answer:
What can fill a room but takes up no space?
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
I am a word. I become longer when the third letter is removed. What am I?
What kind of dog keeps the best time?
The more you take away the bigger I get. 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