A long, thin, pearly white tusk found while walking in Bedfordshire was identified (with the help of a warden from the local country park) as having fallen from the jaw of a Chinese water deer (Hydropotes inermis). The deer is a shy Asian species that is firmly established in the east of England. Like the slightly smaller muntjac, it escaped almost a century ago from the Duke of Bedford’s collection at Woburn Abbey, Bedfordshire. The species does not have antlers but long canine teeth that males use for seeing off…