My dog ate a mushroom: symptoms and emergency action

Damp autumn weather can bring mushrooms up overnight. If your dog eats an unknown wild mushroom, do not try to assess the species yourself. Poisonous species can damage the stomach, liver, kidneys or nervous system.

Many wild mushrooms are non-toxic, but some can cause severe or fatal poisoning. Even experienced people may confuse similar species. Image searches and identification apps are not sufficient for a medical decision. Old or spoiled mushrooms can also cause symptoms even if the species itself is not highly toxic.

Mushrooms grow beyond woodland too. They appear on lawns, around tree stumps, in parks and in your own garden. Especially after mild, rainy days, a quick inspection is worthwhile before letting your dog roam freely.

Symptoms depend on the mushroom species. They may occur quickly or begin many hours later. Possible signs include:

Remaining symptom-free for some time does not rule out dangerous ingestion. Some mushroom toxins damage organs before a dog looks visibly ill.

Call a veterinary practice or clinic straight away. Report your dog's weight, the suspected amount and the time. If it does not delay help, photograph the mushroom from above and below where it was found. Collect remnants separately in a container or paper bag. Vomit can also help with identification. Wash your hands afterwards.

Do not wait for reliable mushroom identification. Do not induce vomiting or give milk, oil, salt or medication. Appropriate treatment depends on the toxin, timing and your dog's condition.

A well-trained leave-it cue and reliable swapping are more useful than frantic chasing. A long line can improve safety in areas with many mushrooms. Dogs that regularly pick things up outdoors may benefit from a well-fitting scavenging guard with professional guidance. A muzzle must provide enough room for panting and drinking.

Remove mushrooms completely from your garden and dispose of them so your dog cannot access the waste. Check the area again because fruiting bodies can grow back quickly.

After possible poisoning, your vet determines whether, when and what your dog may eat. A bland diet chosen independently may be unsuitable with allergies, illnesses or necessary tests. After veterinary clearance, a clear, well-tolerated diet without unnecessary extras is worthwhile.

Note: any unknown wild mushroom eaten by a dog should be treated as potentially dangerous.