Newfoundlands are gentle giants but they can also be the toughest dogs to own if not well trained early on, as they can easily out-muscle most owners. In addition, Newfoundlands are definitely not a good match for those who want a tidy home as they tend to slobber and also heavily shed twice a year.
Because of their size, they can be destructive without even meaning to – knocking over whatever comes in their path while just being playful.
Spanish Water Dog
Spanish Water Dogs are a very athletic and high maintenance breed, they need a lot of exercise throughout the day. Originally hailing from Turkey, this breed was imported into Spain to serve as a guard and sheepdog and as such, they are completely loyal.
Without proper exercise and a given task to perform, the Spanish Water Dog will be a very sad pooch and may become destructive as a result.
Irish Wolfhound
With a heart as big as the rest of them, these tall doggos were initially bred to hunt wolves and they may have a slight inclination to be aggressive towards other animals. Because of its size, it is important to teach it good leash manners before it gets too big to handle.
Sadly, Irish Wolfhounds suffer from a number of health issues and have a very short lifespan of only five to seven years.
Labrador
Labradors may be America’s most popular, but they can be difficult for an inexperienced dog owner to raise properly. Until they reach full maturity, they have a strong urge to chew and can be destructive if left on their own.
And if Labs are not trained properly, they tend to pull their owners while being walked on the leash. Labradors also shed a lot, so expect to find its hair all over your house.
Akita
These fascinating dogs have a powerful prey drive, Akitas were originally bred to hunt wild animals, and if not trained properly, they can become aggressive. Akitas can also be very protective of their owner, making them a potential threat to others if they aren't trained properly.
Akitas also have a reputation for being challenging when it comes to raising them.