Addiction is defined as a chronic, relapsing brain disease that is characterized by compulsive drug seeking and use, despite harmful consequences. â  It is considered a brain disease because drugs change the brainâthey change its structure and how it works.ource: From the laboratories of Drs. N. Volkow and H. Schelbert. Addiction is a lot like other diseases, such as heart disease. Both disrupt the normal, healthy functioning of the underlying organ, have serious harmful consequences, and are preventable and treatable, but if left untreated, can last a lifetime.
there is a dog from Africa called a Basenji, it doesn't bark, it sorta yodels. and also the visila from south America is said not to bark Please don't listen to all of the smart arses. Deaf dogs bark very little. But all dogs bark.
Both guard dogs and watchdogs bark loudly to alert their owners of an intruder's presence and to scare away the intruder. The watch dog's function ends here; a guard dog is capable of attacking, or restraining the intruder.ome smaller breeds (such as Keeshond and Tibetan Terrier) are excellent watchdogs but not guard dogs because they bark loudly to alert their masters of intruders but are physically small and not given to assertive behavior.