Mogura no Motoro can be watched on YouTube in its Japanese title; there are no subtitles in the video. In the beginning, a group of moles are at odds with a fox and a bear: the duo antagonizes the moles because the moles steal yams/potatoes from a garden belonging to them. A runt mole flees into a barn and befriends a kind doll. They work together to halt the feud between the moles and the gardeners. The animation, done by early Toei, is dated but the animal designs are charming and the characters & their motivations are simple to follow. The plot might be based on Asianor European folklore, as is common with other anime in its era.

If you want to watch a short anime from before the well-known titles of the 70s/80s started to air on TV then I recommend Mogura no Motoro. Anyone should be able to follow along with no subtitles as the initial story is easy to understand visually.