Is a security cam really the best deterrent? I figure my two pitbulls would beat out a security cam on their own merits, though I'd preferably combine the two.
1. The cost of Dog Food + Care makes them much more expensive than almost any security system.
2. Here in Las Vegas more than half the dogs in our shelter are Pit Bulls. Almost all were purchased by people who wanted a "security dog" more than a pet.
If the deciding factor for you to buy an animal is the security benefit, ultimately you will not be happy with that decision. And neither will the animal.
The marketing statement from Nest just seemed like some hyperbole and I have a bad habit of fixating on those sorts of things.
Great points though!