Subject of leonbergersNow that I've said all these wonderful things about my dog, you should know that she didn't become that way by chance, but through hard work. Raising Lea proved to be a real challenge. The Leonberger is probably one of the greatest dogs that I've had the pleasure of knowing (I'm biased), but they aren't the dog for everyone. They can be difficult, stubborn and they require early and on-going training and socialization to get them to the gentle giant status, but the training doesn't end there, it continues. If you don't have the time for this dog and just want a dog that is happy being in the backyard -- then please don't consider this breed.
These are large, powerful animals that need an owner who will have the time and follow-through to train and socialize them. What a little dog can get away with, a big dog cannot. You don't want to have a big, unhappy and out-of-control dog on your hands, so please consider the consequences if you don't train and socialize them properly. Also this breed is happiest when they are part of the family group; that means they don't make good outside dogs and if you are not willing to share your home life with this breed, I wouldn't recommend getting one. You also have to consider the expense of owning a large breed - food, medical and other related costs aren't cheap.
One of the most common complaints from new Leonberger puppy owners is their pup isn't the gentle giant they read about or were told about. They aren't. They require training, socialization and maturity to become gentle giants and an owner who is willing to do all the above. The good news is - the end result is worth it all.