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.