The evolution of hog dogs.

I think with all the technology for breeding and the ability to get semen shipped to dang near anywhere in the world we have been able to build better dogs, now the cull rate is always going to be one of those things that has a huge variation from person to person and breed to breed but we can all agree that its not as stringent as it should be. Before if we wanted to breed dog a to dog b we had to arrange for them to be put together, now UPS does that for us. Plus with other things mentioned before such as game cameras, tracking systems, radios and cell phones we have bred better dogs and by doing so we are pushing the limits in the prey as well.
As to the rattlers I have read those studies and presented them in class for an ecology class and it makes sense.