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.
Harrier
Harriers have been humorously been called the “Beagle on steroids”. They’re a very athletic hunting hound, and as such, favor being active, with a special affinity for exploring outdoors.
Unless raised around other animals from a very young age, Harriers will tend to be aggressive towards any other small pet that it may encounter.
English Foxhound
English Foxhounds have been the preferred choice of English fox hunters for hundreds of years, and that's why they are known to be one of the most difficult dog breeds to train.
English Foxhounds often get along well with horses and people but due to their hunting background, they require a lot of exercise as they have a very active demeanor.
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.
Newfoundland
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.