Nothing. I can guarantee it! If Tosas weren't very tolerant of being teased by children, my fool of a stepson would have been dead or mangled about 14 years ago! Besides I knew the dog in question well. He was much gentler, more benign dog than his brother Dempsey, whom I owned. Some people said Dempsey was the most intimidating dog they'd ever met, but, God, how I loved that glorious, magnificent creature. When I was bitten in the spring (by a Rottweiler mix that was running loose) and confronted the owner, I started with "now here's where you're going to tell me he's never bitten anybody before, right?" and goddamnit, wouldn't you know it, he immediately said "he's never done this before..." I have owned large breed dogs my whole life, but I'd never, ever trust any of my kids alone with them for extended periods of time. Period.