The Fox and the Beehive

In a green forest, a clever but greedy fox smells sweet honey and wants it badly.
Even though the bees warn him to stay away, he ignores them and climbs the tree.
Thinking he is smart enough, he tries to take the honey anyway.
Suddenly, the angry bees attack, and the fox runs away in pain.
He hides in the water and realizes his mistake.
Why did his cleverness fail him—and what will he do differently next time?