Answer:
Soft, hairy, from door to door. I am the pet that always stays on the floor. What am I?
I contain six letters minus one and you got twelve.
I can be swallowed, but I can also swallow you. What am I?
I am an insect. Half of my name is another insect. I am similar to the name of a famous band. What am I?
I help engines spin and pants stay up. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.