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Fall Toxins in Your Yard: Mushrooms, Compost, and More

As the leaves start to turn here in Sleepy Hollow, many of us spend more time outdoors with our pets. Cooler weather makes fall a favorite season for long walks, backyard play, and weekend yard work. But hidden in the grass, garden beds, or compost pile, certain fall hazards can pose risks to curious pets. Knowing what to look out for can help keep your four-legged family members safe.

Mushrooms: A Hidden Risk Under the Leaves

After autumn rains, mushrooms can pop up almost overnight in yards, parks, and wooded trails. While not all are toxic, it’s nearly impossible to tell the safe from the dangerous. Some poisonous varieties can cause severe gastrointestinal upset, liver failure, or even be life-threatening.

What you can do:

  • Check your lawn regularly and remove mushrooms right away.

  • Keep dogs leashed on walks so they don’t nibble at unknown fungi.

  • Call us (or the ASPCA Animal Poison Control at 888-426-4435) if you suspect your pet ate a mushroom.

Compost Piles: Great for Gardens, Not for Pets

Composting is wonderful for the environment, but decomposing food scraps can produce harmful molds and toxins. Even small amounts may cause tremors, seizures, or digestive upset in pets.

Safety steps:

  • Fence off your compost area or use a secure bin.

  • Never let pets dig through yard bags waiting for pickup.

Yard & Garden Clean-Up Hazards

Fall often means fertilizer, mulch, and bulb planting. Each of these can pose risks:

  • Fertilizers can upset the stomach or, in some blends, cause more serious illness.

  • Cocoa mulch has compounds similar to chocolate and can be toxic to dogs.

  • Spring bulbs like tulips and daffodils may be planted in fall but can cause drooling, vomiting, or worse if chewed.

Other Fall Hazards to Watch For

  • Rodenticides (rat/mouse bait): More common as rodents seek warmth indoors. Extremely dangerous to pets.

  • Antifreeze (ethylene glycol): Just a small amount spilled in the driveway can be lethal. Look for less toxic propylene glycol versions.

What To Do If You Suspect Poisoning

If your pet shows sudden vomiting, diarrhea, drooling, tremors, or just isn’t acting like themselves, don’t wait—call us right away. Bring any packaging or a sample of what your pet may have ingested to help guide treatment.

Keeping Fall Fun & Safe

Autumn in Sleepy Hollow is beautiful—crisp air, colorful leaves, and plenty of outdoor time. With a little extra vigilance around mushrooms, compost, and other seasonal hazards, you can make sure your pet enjoys it safely.

If you have questions about fall toxins or want to schedule a wellness exam, give us a call at Sleepy Hollow Animal Hospital. We’re here to help you keep your pet healthy, happy, and ready for the season.

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