Answer:
With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
Two bodies have I, though both joined in one. The more I stand still the faster I run. What am I?
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
Draw fire or fill me; I'm still empty.
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