Yeah, but we know there are many aggressive dogs who have learned to be aggressive. The fact that if they can or can't be solved is irrelevant to the fact that they form a percentage of the dogs labeled as "aggressive". I haven't been able to watch it entirely as it keeps freezing. Maybe because of my laggy connection. It always stops loading halfway :/. I'll have to download it from somewhere I guess. And you know that's not what I meant. I never said that because it was not tested in a controlled environment it does not exist. Controlled environments are a vital part of research, whether we like it or not. And if we want to learn more, what better way of learning than that of a controlled environment? We can't make those with humans because it's sort of illegal. Maybe I'm a bit over-enthusiastic with science but it'd be amazing if we could do research like that with humans. What I'm saying is that research usually has other goals in mind. It's more of a matter on why and where, and the research you keep mentioning is all about that. I'm not doubting that there are dogs who are genetically dog aggressive or shy. I'm not doubting that dogs who can't be cured, can be labeled as genetically dog aggressive or genetically shy, and that if you do an MRI it will show that they are not normal. I'm just saying there are lots of things that are still unknown, and you can't deny that - otherwise, there'd be no research.