. "The gaseous odors they give off when ripe help spur their reproduction by attracting animals that consume them and spread their spores.Walking through the foothills with Lolo and Duff, it is easy to spot the tiny holes made by squirrels, deer and other creatures who have dined on truffles in recent days.In the Northwest, the three commercially harvested truffle species can be found in Oregon's Wil" . . . .