It shows three large bull breed dogs jumping up and grabbing onto a screaming woman in a park. But are breeds such as this really to blame for a rising dog bite problem? Over a similar period, fatal dog bites in England and Wales averaged at about three per year. The rise in incidence of dog bites appears to be restricted to adults, where the numbers have tripled over 20 years. The majority of dog bites are from a dog known to the victim.