Isn't that how pit bull owners describe their killer pooches?
I don't know about anyone else, but I've never had a pet that wasn't a stone cold killing machine carnivore. From Fluffy to cat to Dumbass the Rottie mix.
But you bring up a good analogy. You forget they are stone cold killers at your own risk. Same thing with an untrained and unsocialized human. Especially children becoming adults.
/johnny