Answer:
What scientists might call your pooch.
A horrid monster hides from the day, with many legs and many eyes. With silver chains it catches prey. And eats it all before it dies. Yet in every cottage does it stay. And every castle beneath the sky.
What has armor but is not a knight, snaps but is not a twig, and is always at home even on the move?
Attracted by light but flies at night. It's wind and hairy but not too scary. What is it?
What always goes to bed with its shoes on?
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?