This has nothing to do with the undead vampire of folklore, but rather a nature documentary about bloodsucking members of the animal world – including a few insects, but concentrating especially on the vampire bat. The critter is shown in uncomfortable close-up literally burrowing for sustenance into the cheek of a unfortunate guinea pig!
The 6-year shooting schedule for what amounts to just 9 minutes of film is baffling – unless WWII and the Nazi occupation of France made it difficult for the director to operate at his leisure! Incidentally, just as mysteriously, 23 of his efforts were released on DVD by Criterion (of all companies!) under the collective moniker SCIENCE IS FICTION
but, it is safe to say, that I will not be bothering to find out what makes them worthy of such 'prestigious' branding!