{"slug": "bay-area-veterinarians-urge-caution-as-toxic-mushrooms-appear", "title": "Bay Area veterinarians urge caution as toxic mushrooms appear", "summary": "Emergency veterinarians in Marin County report a dramatic spike in dogs suffering from suspected mushroom poisonings, with over 10 cases treated in three weeks. The death cap mushroom (Amanita phalloides), which causes severe liver and kidney failure, is currently abundant in the region. Pet owners are urged to seek immediate veterinary care if ingestion is suspected, as survival rates are only 20% even with aggressive treatment.", "body_md": "**Getting your**\n\n[Trinity Audio](//trinityaudio.ai)player ready...Over the past three weeks, emergency veterinarians in Marin County have seen a dramatic spike in dogs suffering from suspected mushroom poisonings. At the Pet Emergency and Specialty Center of Marin alone, we have treated more than 10 suspected cases during that time. As mushroom season continues throughout the county, pet owners should be aware of a hidden danger growing in parks, yards and neighborhoods across the region.\n\n**RELATED: 3 people hospitalized after eating poisonous wild mushrooms in Napa County**\n\nThe Bay Area is home to hundreds of beautiful mushroom species, most of which are harmless. However, a small number are highly toxic to both animals and people. Among the most dangerous are mushrooms containing amatoxins, including the death cap (Amanita phalloides), which can range in color from white to brown and often feature a skirt-like ring around the stem.\n\nAmanita mushrooms typically emerge after rainfall and are commonly found beneath trees. Unfortunately, they are currently abundant throughout Marin County and the surrounding region.\n\nAs an emergency veterinarian, I have seen the devastating effects of these mushrooms firsthand, particularly over the past several weeks. While cats can also be affected, dogs are far more likely to ingest mushrooms. In many cases, owners never witness the exposure. Amanita mushrooms emit a distinctive odor that appears attractive to dogs, even those that do not normally eat mushrooms.\n\nThe first signs of poisoning are usually gastrointestinal: vomiting, diarrhea, decreased appetite or a combination of these symptoms. Alarmingly, affected dogs may appear to improve after 12 to 24 hours, only to become critically ill shortly afterward. By that point, the liver may already be failing.\n\nAs liver damage progresses, owners may notice yellowing of the eyes, gums or skin, as well as signs of abnormal bleeding because the liver can no longer produce essential clotting factors. Dogs become profoundly lethargic and, without treatment, may develop seizures and die within days of ingesting the mushroom.\n\nThese cases lead to some of the most heartbreaking conversations veterinarians have with pet owners. Amanita species, particularly Amanita phalloides, can cause severe liver and kidney failure within 24 hours of ingestion. Bloodwork often reveals dramatically elevated liver enzymes, impaired blood clotting and dangerously low blood sugar levels.\n\nTreatment requires immediate intervention, intensive supportive care and often four to seven days of hospitalization. Even with aggressive, gold-standard treatment, survival rates remain disappointingly low at 20%.\n\nIf you suspect your dog has eaten a mushroom, seek emergency veterinary care immediately. Early decontamination can significantly improve the chances of survival. If it can be done safely, bring a sample of the mushroom with you for identification.\n\nBecause mushroom ingestion is rarely witnessed, it’s important not to dismiss sudden vomiting, diarrhea or loss of appetite —especially during periods when mushrooms are abundant. Prompt veterinary evaluation may make the difference between life and death.\n\nPet owners can also seek assistance identifying mushrooms by photographing them and posting the images to the Facebook group Poisons Help: Emergency Identification for Mushrooms and Plants. For the most accurate identification, photograph the mushroom from multiple angles and include information about where it was found and what it was growing on, such as soil, grass, wood or mulch.\n\nWhile these mushrooms are only dangerous when ingested, it’s still wise to wash your hands after handling them and avoid touching your eyes or mouth until you have done so.\n\nThe good news is that many mushroom poisonings are preventable. Keep dogs on a leash, especially in areas where mushrooms are growing. For dogs that tend to investigate or eat things outdoors, consider using a basket muzzle or an OutFox Field Guard. These tools can help prevent ingestion of dangerous mushrooms, foxtails and other hazards commonly encountered on walks.\n\nAs a veterinarian, my goal is not to create fear but awareness. Death cap mushrooms are a recurring and often overlooked danger in Marin. A few moments of prevention and vigilance can spare families the heartbreak of losing a beloved pet to a toxin hiding in plain sight.\n\n*Dr. Kayla Lamphere is an emergency veterinarian practicing at the Pet Emergency and Specialty Center of Marin. Marin Humane contributes Tails of Marin articles and welcomes comments and questions. Visit marinhumane.org, find us on social media @marinhumane, or email lbloch@marinhumane.org.*", "url": "https://wpnews.pro/news/bay-area-veterinarians-urge-caution-as-toxic-mushrooms-appear", "canonical_source": "https://www.mercurynews.com/2026/06/16/marin-veterinarians-urge-caution-as-toxic-mushrooms-appear/", "published_at": "2026-06-16 13:41:19+00:00", "updated_at": "2026-06-16 14:23:02.775279+00:00", "lang": "en", "topics": ["ai-safety"], "entities": ["Pet Emergency and Specialty Center of Marin", "Amanita phalloides", "Marin County", "Bay Area"], "alternates": {"html": "https://wpnews.pro/news/bay-area-veterinarians-urge-caution-as-toxic-mushrooms-appear", "markdown": "https://wpnews.pro/news/bay-area-veterinarians-urge-caution-as-toxic-mushrooms-appear.md", "text": "https://wpnews.pro/news/bay-area-veterinarians-urge-caution-as-toxic-mushrooms-appear.txt", "jsonld": "https://wpnews.pro/news/bay-area-veterinarians-urge-caution-as-toxic-mushrooms-appear.jsonld"}}