Friends of the Forest

I was walking the woods of old searching for mushrooms. Suddenly I heard conversation sounds; I moved to that direction, careful not to be discovered. A bear and a wolf were talking:

“Are you absolutely sure?” asked the bear, as if to re-confirm.

“Yes,” replied the wolf, “the dog at the pig farm was tied with a chain and sleeping, that’s why I didn’t see it. You must hurry. It’s starting.”

“It’s the right thing to do, my old friend,” said the bear. “See you soon, on the green meadows of heaven forests.”

“So long, my old friend.”

They hug as good old friends would, then the bear mauls the wolf to death.

Impressed by the beauty and selflessness of the scene, I contemplate the whole story for a while, before returning to my mushrooms.

What had actually happened?

Note: Official riddle answer: The Forest Friends Uncovered