Researchers at the National Institute on Aging say their study suggests a link between depression and cancer in elderly people. December 15, 1998. Web posted at: 8:15 p.m. EST (0115 GMT) WASHINGTON (CNN) -- A new study by researchers at the National Institute on Aging suggests a link between chronic depression and cancer among older patients. When present for at least six years, depression was associated with a generally increased risk of cancer, the researchers wrote in the Journal of the National Cancer Institute.
Rate this answer: A wolf's bite packs a punch of 1500 pounds of pressure per square inch which is meant to snap an antelope or elk leg in half. A domestic dog even an American Pit Bull terrier can't even measure up to half of that at about 250 pounds of pressure per square inch.
The large powerful head is what enables the Rottweiler to have the strongest bite force of any domesticated dog, far exceeding even the Pit Bull and German Shepherd Dog. Once they reached Rottweil, Germany, the job of the Rottweiler was now to defend all the humans and herds that it had brought here.