Nodoka Mori no Doubutsu Daisakusen

With Peter the fairy as chairman, the animals of Placid Forest gather in a meeting to discuss the villagers' plan to cut down all the trees in the forest. They decide to stage a protest in the hope of preserving the woods, but the greedy men will not listen to their warning. The animals are forced to carry out one final operation.

(Source: AnimeNFO)