Gates is co-author, with Chuck Collins, of the book Wealth and Our Commonwealth: Why America Should Tax Accumulated Fortunes, a defense of the policies promoted by the estate tax. He married Mary Maxwell Gates, whom he met at UW, and who died in 1994. They had three children: Kristianne, Bill, and Libby.
Symptoms of heartworm disease may include loss of appetite, lethargy, exercise intolerance, weight loss, fever, dyspnea (difficult, labored breathing, shortness of breath), coughing, weakness, dull dry coat, and hemorrhage. There are no symptoms at all until the disease is advanced.
Both of these are relatively uncommon types of dog worms and cause a slight clinical condition or symptoms. These can cause inflammation in the esophagus and stomach by causing slight hemorrhages on the walls of both organs. Dog Heart Worms: Dog Heart worms are parasites which infest the circulatory system of dogs. These may be found in the right ventricle of the heart, causing heavy congestion in the circulatory system. Dirofilaria immitis is particular specie of heart worm and is considered to be the cause of heart worm disease in dogs.