Date of disappearance: Between 15,000 and 25,000 years ago
Reason: Climatic changes
Special power: They help to maintain a mosaic of habitats: a mixture of woodland, scrub and glades that creates a wide variety of niches for other species.
Status: They have already been released into a wide range of climatic zones in Europe and Russia. But we would not consider bringing in more herbivores until deep vegetation in this country has sufficiently recovered from the impacts of overgrazing.