Food safety
Can dogs eat wild mushrooms?
No — don't give this
Some are deadly and telling them apart in a field is not realistic. Shop-bought mushrooms in a meal are a different matter.
If your dog has already eaten it
If your dog eats a wild mushroom, call a vet and photograph it if you can.
Being honest about this
Dogs differ, and amount matters — a crumb of something rich is not the same as half a packet. Treats of any kind should stay under a tenth of what your dog eats in a day. If you're unsure, your vet would far rather take the call.