I did say I should've been more specific. Although you don't know whether it's not strictly true. As you've pointed out, we don't know how the 10-19 age group breaks down. As there are many more boys in the 10-19 group that have been treated for a dog related injury, I wouldn't mind putting a bet on that a significant number of those are down to roughhousing. The figures from HES online don't include those treated in A&E, it gives an overview of those that have been admitted.