Child's beloved might turn away? Largest litter, stolen astray? Spot a dog, to know the truth, Sound him out, for first line's proof

To peak, a fill. So cheap a thrill, To roll or slide. A horizon divide, Push plates, upgrade to Kil.

I am a white feather on the back of the night. I have many phases, but I’m never out of sight. What am I?

A medical marvel derived from mold, Killing bacteria, but can't hurt a cold -- Take out its in, one L, and the first of its eyes, And you'll find me hidden inside. Still made from nature, but I'm quite dead; Indeed, you see, I'm all full of lead.

I follow you close but never lead, I grow or shrink with light’s own speed. I have no voice, no weight, no form, Yet flee the dark and die at noon.