A Dog's World, Riddle #5

What doesn’t move without it bewitched?

What can get dirty without moving an inch?

This that can be anywhere, can be a perfect fit.

This that cannot defend yet protects when you trip.

That this is what we disregard while we’re taking our steps,

what stays the same even after we’ve left?

Unless, you own a pet that couldn’t wait to go,

then you’ll return and my riddle you’ll know.