Dog dies after eating mushrooms in owner's yard
This story is from Colorado and might provide a timely warning for all. Mushrooms like lots of rain, and will of course grow in your backyard. Many many varieties of mushrooms are not poisonous, how-ever some are, and many can cause digestion upset.
Check your yard frequently not only for mushrooms, but things like crabapples, garbage that drifts into your yard, etc.