Behind those fierce looks (and name!) is a big heart, especially when it comes to kids, says DiNardo. And that's not all: These pups are smart, trainable, and loyal, she adds.
Here's another ferocious-looking pooch that's really a mellow mush-ball. "This gentle breed is known for its lovable disposition," says DiNardo.
There's a reason why these friendly pups are the most popular in the United States. "They were bred to be cooperative when hunting and bringing ducks back to their owners," says Katherine A.
When studying canine aggression, researchers from the University of Pennsylvania polled owners to find the least (and most) aggressive breeds toward humans and dogs—and whippets led the list of the least bellicose.
The Darlings (of Peter Pan fame) were onto something when they picked Nana as their children's nanny. Newfies are famous for their devoted nature and their affinity for kids, says DiNardo.
Yes, they're big, powerful dogs, but they also tend to be placid. This is another breed that ranked very low on the scale of aggressive behaviors toward people and other pups.
Like Labs, Goldens were bred to be obedient and less reactive hunting companions, says Dr. Houpt.
"Frenchies are affectionate, playful, smart, adaptable dogs," says DiNardo. They get along well with just about everyone—two- and four-legged, young and old—so don't be afraid to take your French bulldog out.