In 2001 dead porpoises with yeast-packed lungs washed up on the southeastern shore of Vancouver Island in British Columbia. The bloated organs were several times normal weight, with barely any room for air. The island's veterinarians had never seen anything like it. Cats and dogs there were having trouble breathing, too. In cats, the disease could cause a particularly gruesome symptom: weeping holes, produced when a yeast infection ate its way through the skull. At the same time, a few people on the island, located off Canada's Pacific Coast, also began falling ill with an unknown respiratory malady. They coughed constantly, their energy sapped, their sleep stolen. Chest x-rays revealed ominous lung or brain nodules. Biopsied tissue, however, proved the culprit to be not cancer but yeast.