Chihuahua the little dog with a big personality. I think they are cute.The problem with doing that is that you lose out on the "high price" clientele who want or acquire an aggressive dog simply to scare, or alternatively, for protection. Like a security dog for the house perimeter, or for internal safety. And, yes. The problem is the obvious. At some point in time with enough testosterone or adult genetic coding they can turn and become the aggressor of their ancestral time. I have been bitten by dogs that were not my own, so am very leery of dogs, in general. They can make a very nasty bite and infection, hit arteries or veins, or even lose an appendage. At some time in the future I may get a very small dog again, perhaps a chihuahua, for their internal sentience. Not sure.