Answer:
What holds names and memories which are not its own?
Tall in the morning, short at noon, gone at night. But I'll be back soon.
There are millions of me. I am very small but when moving fast I am deadly.
I have three hundred cattle, with a single nose cord
I'm very tempting, so its said, I have a shiny coat of red, and my flesh is white beneath. I smell so sweet, taste good to eat, and help to guard your teeth.
I appear in the morning. But am always there. You can never see me. Though I am everywhere. By night I am gone, though I sometimes never was. Nothing can defeat me. But I am easily gone.