S1E22: Hold Your Breath

Bright summer day. Bear, while gathering berries, meets female bear in the woods and arranges a date. Returning home, he starts cleaning the house and baking a pie. Once the pie is done, bear decorates it with strawberries, and the notices that Masha has appeared out of nowhere to eat them before starting to hiccup. He tries all manner of remedies from a medical encyclopedia to stop the hiccups. In the end, hiccups spread to everyone: Masha, bear, female bear, and the other woodland creatures