I think that this cartoon is excellent, and has some of the best traits of "mainstream" Soviet animation at the time (such as the Prostokvashino series). It has likeable (and well-animated) characters, and a kind and well-written story. Until just 2020, it wasn't even on the internet anywhere, and this HD video surfaced even more recently.

I want to thank Cynir very much for making Russian & English subtitles earlier this year. Only now did I get around to checking and correcting them.