I did not use ONE dog to base my opinion off of. I see one on a daily basis and its very loud and fits the breed description perfectly. I have exncountered other tibetan terriers and they're loud as well. I just referenced the one i see on a consistent basis. Nice dog, loud as hell, fits the breed description.
Lets think about my pit bull for a second.
From Dogbreedinfo.com:
That sly smile, those determined eyes, that unwaning pleasure to please... the mere quality and characteristics of the APBT have evoked more human emotional, rational, and irrational response than any other breed that exists today. By no means are these dogs people-haters or people-eaters. Their natural aggressive tendencies are toward other dogs and animals, not people. However if they are properly socialized they will not even be aggressive with them. These are truly quality companions for quality owners only! The American Pit Bull Terrier is a good-natured, amusing, extremely loyal and affectionate family pet, which is good with children and adults. Almost always obedient, it is always eager to please its master. It is an extremely courageous and intelligent guard dog that is very full of vitality. Highly protective of his owners and the owner's property, it will fight an enemy to the death. It is usually very friendly, but has an uncanny ability to know when it needs to protect and when everything is okay. The American Pit Bull Terrier can be willful and needs a firm hand. They are generally okay with other pets if they are raised with them from puppy hood. For the most part they are very friendly, but not recommended for most people. Excellent with children in the family, they have a high pain tolerance and will happily put up with rough child play. As with any breed, they should not be left alone with unfamiliar children. Originally used as fighting dogs, the powerful American Pit Bull may go for the throat of strange dogs. A minimum of training will produce a tranquil, obedient dog. Socialize very thoroughly when young to combat aggressive tendencies and be sure to keep the dog under control when other dogs are present. It has given outstanding results as a guardian of property, but is at the same time esteemed as a companion dog. When properly trained and socialized, this is a very good dog and a great family companion. Unfortunately, some choose to promote the fighting instinct in the breed, giving it a bad name.
Everything i put in bold would be the points where my dog fits the breed description exactly. the one part i italicized i disagree with because pit bulls are HORRIBLE gaurd dogs, don't bark and are so friendly with strangers that pit bull breeders often have to buy other dogs to protect their champion pits from being stolen. Now, is every pit this way, no. is it an overall somewhat accurate description of the breed? yes. So in this instance, the breed description is valuable and accurate.