[Ditter]

Mushroom are interesting. I'll bet I have 20 or more different varieties of wild mushrooms growing (at different times) in my yard. I always scoop them up and put them in the trash because I don't want my dogs to eat them. I lost a dog several years ago to something that destroyed her liver, it might have been a mushroom.

[count-your-change]

More likely antifreeze killed the dog. The liver metabolizes it into products that shut the kidneys down.