Click through our photo gallery to get better acquainted with these ten beloved breeds.
Known to be mellow and patient, Bernese Mountain Dogs can be excellent therapy dogs.
Beneath their massive bodies and, in some cases, copious fur, many are calm and gentle dogs who often just want to snuggle on the couch. Sadly, giant dogs tend to have short life spans and are susceptible to certain health conditions.
And due to their size, big dogs must be well trained and socialized or they can become destructive — which is why it's good to learn as much as you can beforebringing one home.
The most popular breed in Portugal is the Portuguese Podengo known as the Portuguese Warren Dog.
The Podengo is the National Dog of Portugal and is featured as the logo of the Portuguese Kennel Club.
The Portuguese Water Dog is an intelligent and tireless breed.
They are decision makers, though you may not always agree with their decisions and they need to keep busy.
The dog is designed for swimming with a strong bone structure, is well muscled and has webbed feet.
This breed was used to pull nets, herd fish, retrieve objects that fell overboard, rescue people who fell overboard and to carry messages between boats and from boats to shore and back. The Portuguese Water Dog weighs between 50 and 65 pounds, though individuals may be larger or smaller.
If so, you might be one of the many Americans -- 6 percent, according to anxiety expert Dr. Whether these fears stem from urban legends or real-life encounters, it's normal to be scared of wild animals that could cause you physical harm.