Small, long-nosed (or dolichocephalic) dog breeds such as Whippets have the highest life expectancies in the UK, while male dogs from medium-sized flat-faced (or brachycephalic) breeds such as English Bulldogs have the lowest. The results, published in Scientific Reports, have been calculated from data on over 580,000 individual dogs from over 150 different breeds, and could help to identify those dogs most at risk of an early death.