犬が庭でキノコを食べた：今すぐやるべきこと
emergency.ateMushrooms.banner.subtitle
今すぐペットのリスクを評価
| 犬のサイズ | 摂取量 | リスクレベル | 必要な対処 |
|---|---|---|---|
| Unknown wild mushroom | Any amount | CRITICAL | 🚨 Emergency vet NOW — do not wait |
| Cap-and-stem found in yard | Possible amatoxin | High | 🚨 Vet within 1 hour — induce vomiting |
| Store-bought mushroom | None | Low | 👀 Monitor for GI upset |
今すぐやるべきこと
- 1
THIS IS A TRUE EMERGENCY
Do NOT wait for symptoms. Amatoxin poisoning has a deceptive delay — your dog looks fine for 6-24 hours while the toxin destroys the liver. Call ASPCA Poison Control at (888) 426-4435 NOW.
- 2
Collect a Mushroom Sample
If safe, collect remaining mushroom pieces (including base/bulb). Place in a paper bag (not plastic). This helps mycologists identify the species and determine toxicity risk.
- 3
Go to Emergency Vet for Decontamination
Your vet will induce vomiting (if within 2 hours), administer activated charcoal, and start IV fluids. They will monitor liver enzymes for 48-72 hours. Early treatment is the ONLY effective defense.
- 4
Prepare for Hospitalization
If amatoxin poisoning is confirmed, treatment includes: Penicillin G, Silymarin (milk thistle), N-acetylcysteine, IV fluids, and potentially plasma transfusions. Hospitalization typically lasts 3-7 days.
その背後の科学
アマトキシン（アルファ-アマニチン、ベータ-アマニチン）はアマニタ、ガレリナ、レピオタ属に見られる二環状オクタペプチドです。これらは肝細胞のタンパク質合成を停止させるRNAポリメラーゼIIを阻害します。アマトキシンは肝腸循環を起こすため、肝臓が主な標的となります。摂取後、6-12時間の潜在期があり、その後胃腸炎の段階、短い偽回復期（12-24時間）、さらに凝固障害、脳症、死を伴う劇症肝不全が始まります。12時間以内の治療では生存率90%、24時間後には30%に低下します（ASPCA、2023）。
有毒量計算機
摂取量: 0.1mg/kgアマトキシン（1個のデスキャップ=10-15mg）
LD50: よく確立されていません；0.1mg/kgのアマトキシンが致死的な可能性
その背後の科学: ASPCA動物毒物管理センター、2023
1個のアマニタ・ファロイデスの傘には10-20kgの犬を十分に殺せる量のアマトキシンが含まれています。部分摂取でも生命を脅かします。
症状のタイムライン：何を期待するか
Latent phase: dog appears normal. Toxin is being absorbed.
Gastroenteritis phase: explosive vomiting and diarrhea begin. This is the BEST treatment window.
False recovery: symptoms temporarily improve. Owners think dog is healing — FALSE sense of security.
Fulminant liver failure: jaundice, bleeding disorders, hepatic encephalopathy, death without aggressive treatment.
よくある質問
Are wild mushrooms toxic to dogs?
Many wild mushroom species are extremely toxic to dogs. The most dangerous is Amanita phalloides (Death Cap), which contains amatoxins that cause irreversible liver failure. Other toxic genera include Galerina, Lepiota, and Cortinarius. Even non-lethal species can cause severe GI upset. ANY mushroom ingestion should be treated as an emergency because you cannot reliably identify species in the field.
How long after eating a mushroom will my dog show symptoms?
Symptoms from amatoxin-containing mushrooms (Amanita) are DELAYED 6-24 hours. A dog appears fine initially, then develops explosive vomiting and diarrhea. After a brief "false recovery" of 12-24 hours, liver failure begins. By the time jaundice appears, damage is often irreversible. Other species cause symptoms within 30 minutes to 6 hours.
What should I do if my dog ate a wild mushroom?
Treat EVERY wild mushroom ingestion as a life-threatening emergency. Call ASPCA Poison Control at (888) 426-4435 immediately. Your vet will induce vomiting (if within 2 hours), administer activated charcoal, and admit for 48-72 hour observation with liver enzyme monitoring. Do NOT wait for symptoms — early treatment is the only effective defense against amatoxin poisoning.
Can a dog die from eating a mushroom?
Yes. Amanita phalloides (Death Cap) has a 50-100% mortality rate in dogs without treatment. Amatoxins destroy liver cells by inhibiting RNA polymerase II. Even with treatment, mortality remains 20-30%. The lethal dose is 0.1mg/kg of amatoxin — a single Death Cap cap contains 10-15mg. Early aggressive treatment (within 12 hours) significantly improves survival.
Can dogs eat store-bought mushrooms?
Store-bought mushrooms (white button, cremini, portobello) are generally safe for dogs in small amounts. However, they offer little nutritional value and can cause GI upset if fed in large quantities or cooked with butter/oil/garlic. Never assume a field mushroom is safe — only eat mushrooms you purchased from a grocery store.
獣医師の診察タイミング
🚨 緊急—今すぐ行く
- Explosive vomiting > 6 hours after ingestion
- Yellow gums or eyes (jaundice)
- Bloody vomit or black tarry stool
- Collapse, seizures, or hepatic encephalopathy
⚡ 緊急性—1-2時間以内
- Known Amanita/Galerina/Lepiota ingestion
- Any wild mushroom ingestion in small dogs
- Lethargy + vomiting after 12-24 hours
- Abdominal pain on palpation
👀 監視—今日獣医師に連絡
- Store-bought mushroom ingestion
- No symptoms after 8 hours
- Small amount with no toxin risk identified
- Normal appetite and energy