
Mowers mushrooms, also known as *Clitocybe acromelalga*, are a type of fungus that can grow in lawns and grassy areas, often coming into contact with dogs during outdoor activities. While not all mushrooms are toxic, mowers mushrooms are known to contain toxins that can cause severe health issues in dogs if ingested. Symptoms of poisoning may include vomiting, diarrhea, abdominal pain, and in severe cases, neurological problems or even organ failure. Pet owners should be vigilant and remove any mushrooms from their yards to prevent accidental consumption, as prompt veterinary care is essential if a dog is suspected of eating these toxic fungi.
| Characteristics | Values |
|---|---|
| Mushroom Type | Mower's Mushroom (Clitocybe clavipes) |
| Toxicity to Dogs | Mild to Moderately Toxic |
| Symptoms of Poisoning | Gastrointestinal upset (vomiting, diarrhea), excessive drooling, lethargy, abdominal pain |
| Onset of Symptoms | 30 minutes to 2 hours after ingestion |
| Treatment | Induce vomiting (if recently ingested), supportive care (IV fluids, medications for symptoms), activated charcoal |
| Prognosis | Generally good with prompt treatment, rarely life-threatening |
| Prevention | Keep dogs away from mushrooms in lawns and gardens, promptly remove any mushrooms found |
| Common Locations | Lawns, grassy areas, especially after rainy periods |
| Identification | Tall, slender stem, small cap, often found in clusters |
| Similar Toxic Mushrooms | Other Clitocybe species, Amanita species (more severe toxicity) |
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What You'll Learn

Common Mower Mushroom Types
Mower mushrooms, often found in lawns after mowing or in grassy areas, can vary widely in appearance and toxicity. One of the most frequently encountered types is the Clitocybe species, which includes mushrooms like *Clitocybe dealbata* and *Clitocybe rivulosa*. These mushrooms are commonly known as "sweaty feet" mushrooms due to their odor. While not typically fatal, ingestion can cause gastrointestinal upset in dogs, including vomiting, diarrhea, and abdominal pain. It’s important to monitor your dog if you suspect they’ve consumed these mushrooms and consult a veterinarian if symptoms persist.
Another common mower mushroom is the Coprinus comatus, or shaggy mane mushroom. This mushroom is generally considered non-toxic to dogs, but its appearance can be misleading, as it resembles other toxic varieties. Dogs may still experience mild digestive issues if they ingest large quantities. However, the primary concern is misidentification, as toxic mushrooms like the Amanita species can grow in similar environments. Always err on the side of caution and remove any mushrooms from areas where dogs play.
The Marasmius oreades, often called the fairy ring mushroom, is another mower mushroom type that may appear in lawns. While it is edible for humans, its effects on dogs are less clear. Some dogs may tolerate it without issue, but others could experience gastrointestinal distress. The unpredictability of individual reactions makes it safer to prevent dogs from consuming these mushrooms altogether. Regularly inspect your lawn and remove any mushrooms to minimize risk.
A more dangerous mower mushroom is the Galerina marginata, which closely resembles non-toxic varieties like the shaggy mane. This mushroom contains amatoxins, which are highly toxic to dogs and can cause severe liver damage or failure if ingested. Symptoms may not appear for 6–24 hours, making it critical to seek immediate veterinary care if you suspect ingestion. Its presence in lawns underscores the importance of vigilance and proactive mushroom removal.
Lastly, Psathyrella candolleana, a lawn mushroom often found after mowing, is generally considered non-toxic but can still cause mild gastrointestinal upset in dogs. Its unassuming appearance often leads to accidental ingestion, especially in curious dogs. While not life-threatening, repeated consumption can lead to discomfort. Familiarizing yourself with the appearance of these mushrooms and keeping your lawn clear of fungi is the best way to protect your pet.
In summary, mower mushrooms range from mildly irritating to potentially deadly for dogs. Common types like Clitocybe, Coprinus, Marasmius, Galerina, and Psathyrella highlight the need for awareness and prevention. Always remove mushrooms from your lawn, monitor your dog closely, and consult a veterinarian if you suspect ingestion. When in doubt, treat all mushrooms as potentially harmful to ensure your dog’s safety.
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Symptoms of Mushroom Poisoning
Mushroom poisoning in dogs can manifest in various ways, depending on the type of mushroom ingested and the amount consumed. Gastrointestinal symptoms are often the first signs of toxicity. Dogs may exhibit vomiting, diarrhea, drooling, and abdominal pain. These symptoms can appear within a few hours of ingestion and may be accompanied by a lack of appetite or difficulty eating. It is crucial to monitor your dog closely if you suspect mushroom consumption, as these initial signs can quickly escalate.
In more severe cases, dogs may experience neurological symptoms, which can be alarming for pet owners. This includes tremors, seizures, disorientation, and even coma. Certain toxic mushrooms contain substances that affect the central nervous system, leading to these abnormal behaviors. For instance, mushrooms containing amatoxins can cause severe liver damage, resulting in neurological signs as the toxins accumulate in the brain. If your dog displays any unusual neurological behavior after potential mushroom exposure, immediate veterinary attention is essential.
Liver and kidney-related symptoms are also a significant concern with mushroom poisoning. Some toxic mushrooms can cause acute liver failure, leading to jaundice, where the skin and eyes may appear yellow. Increased thirst and urination, as well as a sudden decrease in energy levels, could indicate kidney damage. These symptoms might not be immediately apparent, as they can take several days to develop after ingestion. Regular monitoring of your dog's behavior and bodily functions is crucial during this period.
The severity of symptoms can vary widely, and some dogs may show only mild signs, such as lethargy and a decreased appetite, while others may experience life-threatening complications. It is important to note that the absence of immediate symptoms does not guarantee your dog's safety, as some toxic effects can be delayed. If you have any reason to believe your dog has ingested mushrooms, especially those found in lawns or gardens, contact your veterinarian promptly. They may induce vomiting or provide specific treatments to minimize the absorption of toxins and prevent further damage.
In cases of mushroom poisoning, time is of the essence. The treatment approach will depend on the specific symptoms presented and the suspected type of mushroom involved. Pet owners should be aware that some mushrooms can be deadly, and even a small amount can be harmful to dogs. Therefore, seeking professional advice and not attempting home remedies is strongly recommended. Early intervention significantly improves the chances of a full recovery.
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Immediate Actions for Dog Owners
If your dog has ingested mower’s mushrooms (also known as *Clitocybe acromelalga* or lawn mower mushrooms), it’s crucial to act quickly, as these fungi can be toxic to dogs. The toxins in these mushrooms can cause severe symptoms, including paw swelling, pain, and gastrointestinal distress. Here are the immediate actions dog owners should take:
- Remove Any Remaining Mushrooms from Your Dog’s Mouth: If you catch your dog in the act of eating mower’s mushrooms, calmly but firmly remove any remaining pieces from their mouth. Use gloves to avoid direct contact with the mushrooms, as the toxins can potentially affect humans too. Rinse your dog’s mouth gently with water to remove any residual spores or toxins.
- Contact Your Veterinarian or Pet Poison Helpline Immediately: Time is of the essence when dealing with mushroom toxicity. Call your veterinarian or a pet poison helpline (such as the ASPCA Animal Poison Control Center) right away. Provide them with details about the type of mushroom (if known) and the amount ingested. They may instruct you to induce vomiting at home or bring your dog in for immediate treatment. Follow their guidance precisely, as improper induction of vomiting can worsen the situation.
- Monitor Your Dog for Symptoms: While waiting for professional advice, closely observe your dog for signs of toxicity. Symptoms of mower’s mushroom poisoning can include drooling, vomiting, diarrhea, lethargy, and swelling or pain in the paws. In severe cases, dogs may exhibit difficulty walking or breathing. Keep a detailed record of any symptoms to share with your veterinarian, as this information will help them determine the appropriate treatment.
- Prevent Further Exposure: Mower’s mushrooms often grow in lawns, especially after mowing or rainfall. Thoroughly inspect your yard and remove any visible mushrooms to prevent re-exposure. Keep your dog on a leash during walks and avoid areas where mushrooms may be present. If your yard is prone to mushroom growth, consider consulting a lawn care specialist to address the underlying conditions that encourage fungal growth.
- Administer Treatment as Directed by Your Veterinarian: If your dog requires medical intervention, follow your veterinarian’s instructions carefully. Treatment may include induced vomiting, activated charcoal to absorb toxins, intravenous fluids for dehydration, or pain management for paw swelling. In severe cases, hospitalization may be necessary for monitoring and supportive care. Do not attempt to treat your dog at home without professional guidance, as some remedies can be ineffective or harmful.
By taking these immediate actions, you can minimize the risks associated with mower’s mushroom toxicity and ensure your dog receives the care they need. Always prioritize prevention by keeping your yard free of mushrooms and supervising your dog in areas where fungi may grow.
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Preventing Mushroom Ingestion
Another effective strategy is to create a mushroom-free zone for your dog. Designate a specific area in your yard where your dog can play and ensure it is thoroughly checked and cleared of mushrooms daily. If possible, install a physical barrier or fencing to restrict your dog’s access to parts of the yard where mushrooms are more likely to grow. This limits their exposure and reduces the chance of accidental ingestion.
Training your dog to avoid mushrooms is also a valuable preventive measure. Teach your dog the "leave it" command, which can be used to deter them from eating anything harmful, including mushrooms. Positive reinforcement techniques, such as rewarding your dog for obeying the command, can help solidify this behavior. Consistency is key, so practice this training regularly to ensure your dog responds reliably.
Additionally, adjusting your lawn care routine can help minimize mushroom growth. Mushrooms thrive in moist environments, so avoid overwatering your lawn and ensure proper drainage to reduce humidity. Mowing your lawn regularly and removing grass clippings can also discourage mushroom growth by reducing organic debris that mushrooms feed on. Consider using pet-safe fungicides if mushroom growth is persistent, but always ensure the products are non-toxic to dogs.
Finally, supervision is essential when your dog is outdoors. Keep a close eye on your pet, especially in areas where mushrooms are known to grow. If you cannot supervise them directly, consider using a leash or a secure enclosure to prevent them from wandering into risky areas. Being proactive and vigilant is the best way to protect your dog from the dangers of mushroom ingestion.
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When to Seek Veterinary Help
If your dog has ingested mower’s mushrooms, it’s crucial to understand when to seek veterinary help, as these fungi can be toxic and pose serious health risks. While not all mushrooms are poisonous, mower’s mushrooms (often found in lawns) may contain toxins harmful to dogs. Immediate veterinary attention is necessary if you suspect ingestion, especially if you notice any signs of distress or unusual behavior in your pet. Quick action can prevent severe complications and ensure your dog receives appropriate treatment.
Another critical time to seek veterinary help is if you observe neurological symptoms, such as seizures, tremors, disorientation, or collapse. These signs suggest a severe toxic reaction and demand urgent medical intervention. Do not wait for symptoms to worsen, as prompt treatment can be the difference between recovery and a fatal outcome. Bring a sample of the mushroom or a photo to the vet, if possible, to aid in identification and treatment planning.
If your dog has ingested mower’s mushrooms but appears asymptomatic, still consult your veterinarian. Some toxins have a delayed onset, and your vet may recommend inducing vomiting, administering activated charcoal, or providing supportive care to prevent potential complications. Never induce vomiting without professional advice, as it may not be safe depending on the toxin involved. Your vet will assess the risk and determine the best course of action.
Lastly, seek veterinary help if you’re unsure whether the mushrooms in question are toxic. Mower’s mushrooms can resemble other species, some of which are highly poisonous. Even small amounts of certain toxins can be deadly to dogs. A veterinarian can provide expert advice and may recommend blood tests, imaging, or other diagnostics to ensure your dog’s safety. Remember, early intervention is key to a positive outcome in cases of mushroom toxicity.
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Frequently asked questions
Mowers mushrooms, also known as *Clitocybe acromelalga*, are toxic to dogs and can cause severe symptoms such as paw swelling, pain, and gastrointestinal distress.
Symptoms include paw swelling, redness, pain, vomiting, diarrhea, drooling, and lethargy. In severe cases, dogs may experience difficulty walking or breathing.
Symptoms typically appear within 8 to 24 hours after ingestion, depending on the amount consumed and the dog's size.
Contact your veterinarian immediately. Induce vomiting only if advised by a professional, and bring a sample of the mushroom for identification.
While fatalities are rare, severe cases can lead to complications. Prompt veterinary treatment is essential to prevent long-term damage or life-threatening conditions.

























