Chihuahua’s are small, so many people underestimate them. Smallest dog in the world, right?
They’re also the 2nd most aggressive dog breed in the world. Since they’re small, the make up for it with fierceness. They are also extremely intelligent and strong willed, which makes for an interesting combination. Since they are incredibly smart, they see themselves as ‘alpha‘s’ within their families, so respond best to firm and positive reinforcement-based training, and generally turn out to be friendly, curious and adventurous, But with the wrong training, they can become dominant, jealous, aggressive and untrusting. And when those traits present themselves, chihuahuas have no problem using those tiny jaws on their target. Ouch.