How often do we here this?

A 56-year-old man has been arrested after a dog bit off part of a six-year-old girl's ear in a park in Chingford Essex.
The girl also suffered injuries to her neck and shoulder and has undergone plastic surgery at a hospital in Essex.

Det Sgt Stuart Cheek, of the Metropolitan police said, "This was an appalling incident that left a young child with serious injuries which are likely to scar her for life."
Police added that the incident was "unprovoked.”

In the wake of this appalling attack there are repeated calls for new legislation for owners to keep all dogs on leads whilst walking in public areas.