In this spirit, I remember an ex-burglar on reddit saying that small dogs are the best guard dogs, because big ones typically have to be trained to be nice, but small ones just don't shut up.
https://i.pinimg.com/originals/67/66/1b/67661bbc78344ddcbd32...
or
https://duckduckgo.com/?q=far+side+cartoon+usual+barking+fre...
My 50lb, German shepherd looking village dog jumps on grandma? Grandma breaks a hip. My parents 3lb Shit-Poo jumps on Grandma? Cue the cooing.
Similarly with barking. Not saying it's true for all owners, but generally once you start training alot of other behaviours get cleaned up as a side effect.