“Dog attacks on postal workers have been on the increase. In Derbyshire and Nottinghamshire, between 2007 and 2008, there were 144 dog attacks – a 12.5% increase over the previous year – while in Hull, between April and September, there were 15 attacks. Being mauled by a dog is no fun, and many postal workers have been severely injured and traumatised by the experience.”

http://www.guardian.co.uk/commentisfree/2009/dec/01/postal-workers-dogs