On page 18 it is reported that Uilen-En Vierenpark de Paay holds both species of Grison and Tim Brown wonders if this has ever happened before in Europe. It has, at Chester Zoo in 1966 (Chester Zoo News July 1966 page 4) and for the same reason. A mate was acquired for a Greater Grison already held in the collection. The new animal turned out to be a Lesser Grison.