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.
Heartworms are parasites that live in the blood vessels and heart of dogs. Sometimes cats are infected with heartworms too. Because heartworms live inside the heart, too many of them can cause the dog's heart not to work very well and the dog can get sick. In small dogs and cats even a few worms can cause a big problem. Dogs get heartworms when an infected mosquito bites them.