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.
Dog heartworm symptoms alert the dog's owner to a health issue. This canine heart is infested with heartworms. The poor dog likely exhibited severe symptoms before dying. Heartworm disease is caused by a parasitic worm that is spread through the bites of mosquitoes. While the dog is the most common host, other animals can also develop heartworm including cats, wolves, coyotes, foxes and ferrets. On extremely rare occasions, a human will also contract the parasite.