A country of peaceful frogs is attacked by a country of devils.
The film is meant for crisis awareness as Japan was on the brink of war with China at the time. Unfortunately, both countries did end up going to war the following year; it was the Second Sino-Japanese War.
(Source: AniList.co)
Very short movie from 1936 about a war between monkeys and Octopuses.
A short morality/folktale film about an old couple that learn the virtue of not being greedy.