Mori no Ongakutai
Plot: An old donkey, who had been working hard for a farmer, quits his job and heads for the town, where he meets a dog, a cat, and a cat. The four animals work together to come up with a plan to surprise the thieves
Jacob Grimm. Jacob Grimm would have been no older than 78 in Mori no Ongakutai as 'Writer'
Wilhelm Grimm. Wilhelm Grimm would have been no older than 73 in Mori no Ongakutai as 'Writer'