Blood thirsty cockers, springers, and collies. Sissy, whimpy GSDs.
I have an idea of what you mean... We tried having a cocker puppy when I was starting elementary school. He wasn't a mean dog, but he was dominant and had so much energy we couldn't drain it. In his boredom he would try to play with you, but he had no restraint. Every time he bit, he drew blood. We had to give him back to the breeder because we knew it was best for him.