Answer:
An open ended barrel, it is shaped like a hive. It is filled with the flesh, and the flesh is alive.
I open wide and tight I shut, Sharp am I and paper-cut fingers too, so do take care, I'm good and bad, so best beware.
A tiny bead, like fragile glass, strung along a cord of grass.
What is the heart of many risks, has a heart, but is not a living being?
A hill full, a hole full; yet you cannot catch a bowl full. What is it?
People take me on walks and I run and have fun. What am I?