 Marven still recalls it as one of the most dangerous moments in his career.In 2005, while filming the Indian rhinoceros in Kaziranga National Park, Marven and his crew unknowingly got too close to a female rhino with a small calf; the mother rhino charged at them, but since they were riding in a truck, they were able to outdistance her.Marven later said that this experience was the most exciting moment in his entire film-making career.