When I was a teenager, my parents owned a toy poodle that was a holy terror! lol
My grandparents had a miniature poodle when I was growing up. She wasn't too bad until she went blind.  
When my parents dog was a baby, he was so mean! He would corner me and he also had a vicious bite for such a little monster! haha 
My grandmother liked to point out that they were the second most intelligent dog breed, but I'm pretty sure that was the standard ones. Hers wasnt mean thankfully.
I think they are thought to be quite intelligent. I wonder if most of them are temperamental or if it's just the toy breeds.
I think all little dogs especially toy breeds like the poodle are temperamental.
I wonder what makes them so edgy! lol  Maybe, it's a sense of insecurity as they realize their size is quite small.
I bet it is their size. Probably scared and have to overcompensate. The smallest known adult dog was a yorkshire terrier.
I think yorkies are so cute and their hair is so smooth!
Yorkshire Terrier
The Yorkshire Terrier is a small dog breed of terrier type, developed during the 19th century in Yorkshire, England. Ideally its maximum size is . A popular companion dog, the Yorkshire Terrier has also been part of the development of other breeds, such as the Silky Terrier. It has a grey, black and tan coat, and the breed's nickname is Yorkie.
History.
The Yorkshire Terrier (also called the "Yorkie") originated in Yorkshire, a county in northern England (and
age when his parents would play Tupac among others when he was young, he cites "When I was ten or so I bought every Tupac CD. I bought all his music. My parents played him, Nas and Biggie in the car and stuff. I listened to other guys, like Eminem, Jay-Z, Big Pun, O.C., Big L, a lot when I was younger too.". Perry started releasing music around 2014, but it wasn't until he released the video ""KAANCEPTS"