Labrador retrievers?
What’d they do, *wag* the person to death?
I bet the numbers would drop if they tracked Black labs separately from the yellows and browns.
The mixed breeds in your chart are also mostly Pit Bull DNA.
It is common practice for Shelters to register the canine they SELL as a “Lab Mix”. This is because many insurance companies will drop your home owners coverage IF you tell them you own a Pit Bull.