Chihuahua
Seeing this breed at the top of the list probably brings a specific image to mind. Often dubbed the “little devil,” Chihuahuas may look adorable—especially when they’re asleep—but they might not be the best choice for households with young children.
Naturally territorial and eager to remain the center of attention, Chihuahuas can be surprisingly aggressive and stubborn, especially when they feel their status is threatened.
Rottweiler
Rottweilers are well known for their large size and skill in herding livestock. Their natural bravery and loyalty to their owners often make them protective, which can be intimidating to strangers and may sometimes lead to aggressive behavior.
While they can be good with children, it's important to supervise interactions closely, as Rottweilers may misinterpret rough play as a real threat.
