Autumn Hazards: What UK Pet Owners Should Watch For

Autumn brings a crisp chill in the air, golden leaves underfoot, and plenty of seasonal changes. While it’s a beautiful time of year, it also introduces a variety of hazards for pets—both indoors and outdoors. From toxic fungi and darker evenings to antifreeze and seasonal decorations, here’s what every UK pet owner should be aware of to keep their furry companions safe during the autumn months.

Toxic Mushrooms and Fungi

As the weather cools and dampens, mushrooms and toadstools become more common in woodlands, parks, and gardens. While not all are dangerous, some wild fungi are highly toxic to pets.

Symptoms of mushroom poisoning include:

• Vomiting and diarrhoea

• Lethargy or weakness

• Seizures or tremors

• Liver or kidney damage in severe cases

What to do: Avoid letting your pet roam unsupervised in areas where fungi are growing. If you suspect your pet has eaten a mushroom, contact your vet immediately.

Fallen Leaves and Mould

Piles of wet, decaying leaves may seem like harmless fun to dogs, but they can harbour bacteria, mould, or parasites.

Risks include:

• Gastrointestinal upset from eating mouldy leaves

• Skin infections or fungal spores

• Hidden hazards like sticks or sharp debris

What to do: Clear garden leaves regularly. Avoid letting dogs play in large, damp piles of leaves, especially in public areas.

Conkers and Acorns

Horse chestnuts (conkers) and acorns from oak trees are abundant in autumn and can be tempting for pets, especially dogs.

Hazards include:

• Choking or intestinal blockage

• Poisoning from compounds like tannins

• Vomiting, diarrhoea, abdominal pain, or lethargy

What to do: Train your dog to leave items on command. Pick up fallen conkers and acorns in your garden, and keep a close eye during walks.

Antifreeze and Coolant

Ethylene glycol, found in many antifreeze products, is extremely toxic to cats and dogs—even in small amounts. It has a sweet taste that can attract animals.

Signs of poisoning include:

• Vomiting and drooling

• Incoordination or seizures

• Lethargy and collapse

• Acute kidney failure

What to do: Clean up any spills immediately. Use pet-safe antifreeze where possible, and store all chemicals securely out of reach.

Darker Evenings and Visibility

Shorter days mean more walks in low-light conditions. This can increase the risk of road accidents or losing sight of your pet.

What to do:

• Use reflective collars, leads or harnesses

• Attach a small LED light to your pet’s collar

• Wear reflective clothing yourself for better visibility

Cats that roam outdoors are also at increased risk in the dark. Consider keeping them in during peak traffic times or fitting a reflective collar with a quick-release buckle.

Rodenticides and Poisoned Baits

As rodents seek shelter indoors, rodent control measures become more common. Many rodenticides are lethal to pets if ingested, either directly or via a poisoned rodent.

Symptoms of poisoning include:

• Bleeding (visible or internal)

• Pale gums and weakness

• Vomiting or collapse

• Seizures or sudden death

What to do: Avoid using poison around the home or garden if you have pets. If necessary, use enclosed bait stations and monitor closely. Seek veterinary attention immediately if exposure is suspected.

Cold Weather and Hypothermia

Autumn temperatures can drop rapidly, especially in the early morning and evening. Smaller pets, elderly animals, and those with short coats are particularly vulnerable.

What to do:

• Provide warm bedding and shelter for outdoor animals

• Avoid long walks in cold, wet weather

• Consider a well-fitting coat for dogs that feel the cold

• Dry wet pets thoroughly after being outside

Halloween Hazards

Halloween can be fun for humans, but it brings added risks for pets:

• Chocolate, sweets, and xylitol are toxic to dogs and cats

• Glow sticks and costume accessories may be chewed or swallowed

• Noise, doorbell ringing and costumes can cause stress or fear

What to do: Keep treats and decorations out of reach. Make a quiet, secure space indoors for pets during trick-or-treat visits. Only dress pets in costumes if they’re comfortable and not restricted.

Bonfire Night and Fireworks

Bonfire Night events start in late October and continue into November. The loud bangs and flashes can be terrifying for animals.

Signs of distress include:

• Hiding or trembling

• Pacing, panting or vocalising

• Trying to escape

• Refusing food or toilet breaks

What to do:

• Keep pets indoors during fireworks

• Close windows and curtains to reduce noise and light

• Use calming products or music to mask sounds

• Consult your vet for anxiety treatment if needed

Final Thoughts

Autumn is a magical time of year, but it’s important to remain vigilant about the seasonal hazards that can impact your pets’ health and wellbeing. With a little preparation and awareness, you can help your furry friends enjoy the season safely.

If you ever have concerns about your pet’s health during the autumn months, don’t hesitate to contact your vet for professional advice and support.