Way back in the early development of the breed, likely 1 dog had schizophrenia. Someone liked the way it would drive in for the kill so they bred it to try to get the trait in the pups. The defective gene was propagated and today we have a killer breed just waiting for something to pull the trigger. It's true that quite likely not all pits have the gene but who can honestly say that theirs doesn't?
If it's schizophrenia, every terrier in the world has it.
I have seen many terriers, from Yorkies, to Ratters, to Jack Russels come up off of one's lap and become a relentless killing machine devoid of pain receptors before they can hit the floor.
Terriers have been bred to instantly turn on killer mode at the sight of vermin for thousands of years. When they snap, there is no stopping them until the prey is dead.
Our cats only survived the JRT because they learned to roll over on their back at sight of him, instead of running, which triggered his pursuit drive.
The difference between lap terriers and pitbulls? You can drop kick the little terriers over the yard fence or crush their skull with your foot if need be. Not many people can do either with a full grown pitbull.
The best pit is just a time bomb with an indeterminate fuse. Who knows what might trigger it into a killing frenzy.
