Catahoula Leopard Dog
This breed, the Catahoula Leopard Dog, originates from Louisiana! They were originally created for hunting wild boar and still serve that purpose today even. As such, they are large, pstrong and independent dogs that need very experienced owners.
Shiba Inu
This breed hails from Japan and while they are gorgeous, Shibas do tend to exhibit an independent nature which sometimes can turn into aggression. Also, most notably, is what is called a Shiba scream. If they are sufficiently provoked or very unhappy, they will produce a super loud, high pitched scream.