It's pure garbage. The 3-4 chickens killed by a dog (not a pit bull) in my yard the last few months are not counted. Just about any dog can kill a chicken. Their obvious goal is to smear pit bulls.
Estimating the under-reporting
ANIMALS 24-7 has since 2013 sought to estimate the total numbers of dog attacks on other animals, and the contribution of pit bulls to the total, by estimating the under-reporting factors and then projecting the available data by whatever those factors are.
Based on the thousands of dog attack accounts we have logged and evaluated, we believe that at minimum the number of reported attacks is only a third of those that are reported, even in the smallest towns, where any event out of the unusual tends to make news.
Least likely to be reported are dog attacks on other animals in which the victim animal or animals belongs to the same household as the attacking dog.
Yet these are the households, the data involving human deaths and injuries indicates, where dogs are most likely to kill and disfigure other animals, simply as a matter of proximity and opportunity.
Also tending to go unreported are dog attacks on other animals in which no human is injured, no one kills the attacking dog, and the economic value of the victim animals is not high enough to encourage the animals’ owners to pursue litigation.
Accordingly, we believe that at minimum the numbers of reported dog attack victim animals must be multiplied by three to get a representative total.