Big Wolf and Little Wolf - The Leaves Didn't Fall

On the top of the tree, there is a small leaf. It was so green, tender and soft. Little Wolf really wanted to take a bite!
"Big Wolf, would you please pluck the little leaves?"
The big wolf replied: "Wait, it will fall."
After waiting for a long time, summer turned to autumn, the leaves turned from green to yellow, and then turned to beautiful gray in the middle of winter, but they never fell...
Early this morning, the big wolf decided to climb up and pick off this leaf, for no other reason than the little wolf's eyes shining with joy.
However, the little wolf hesitated.
Is it really worth letting a big wolf take such a big risk for such a small leaf?