Super cat! Love it! I don't know if ours would come to the rescue. They're brave and they launch fast, checking out action, but I don't know if they'd go after a dog that's already attacking.
Regarding the cameras. I see nothing wrong. Simply getting good coverage. Just think of an elongated property, some trees, fence, ... maybe not being able to do it with one. So, ordinarily that close to the road you may need two to cover from the left corner and right corner. They just have a third cam that overlooks a side gate; thus splitting the coverage over three cameras. If anything it proves the owner has things well covered and he/she or the installer knew how to get coverage with the equipment at hand, even if it is a kit from the big box store.
I hope the negligent neighbor gets slapped with the medical bills etc for letting his dog attack a child.
I've been "attacked" and nearly bitten by dogs as a child and I still have a very hard time trusting medium to large dogs. It didn't help either to have a neighbor for a while with a dozen untrained pit bulls which would either escape or he'd just let them run loose and wander off unsupervised while he's out on his property. One hand you think it makes the neighborhood a little safer from burglars, but getting mad pit bulls come onto you, snarling, growling, ... gets old real quick! I pretty much had to make sure I always had a shovel or something in hand. Geez. Brings back memories.