Hammerfall Vol. 3 - The Guardians of Elivagar

Spirou and Fantasio are famous-among other things, as the official discoverers of that legendary creature, the Marsupilami, one of which often accompanies them on their adventures. So when one of their conferences is cancelled in favour of a documentary film from an unknown author, they are understandably irritated... until, that is,
they realise the film is the very first to record the family life of wild Marsupilamis!