Autumn Hazards Every dog Owner Should Know

Autumn is a season that many dog owners look forward to. The cooler air makes walks more pleasant, the countryside is painted in rich colours, and there’s something undeniably joyful about watching a dog bound through piles of leaves. But behind the charm of the season, there are a number of hazards that can easily catch owners by surprise. Being aware of these risks doesn’t mean you have to stop enjoying the season — it just means you can take a few precautions to keep your dog safe while still making the most of everything autumn has to offer.

One of the most familiar sights on autumn walks is the scattering of conkers and acorns beneath the trees. To us they’re harmless seasonal markers, but to dogs they can pose a real threat. Conkers contain a toxin called aesculin, which can cause severe stomach upsets, while acorns are high in tannins that may lead to vomiting, diarrhoea, and in more serious cases even organ damage if consumed in large quantities. The danger isn’t only chemical: both conkers and acorns are the perfect size to create a choking hazard, especially for larger dogs that may scoop them up out of curiosity. This is why it’s always best to keep a close eye on what your dog is sniffing or mouthing during autumn walks.

Another hidden risk comes from the very thing that makes autumn so enjoyable for dogs: piles of fallen leaves. While most of the time they’re harmless fun, once leaves begin to rot they can harbour mould and bacteria. Dogs who like to chew or dig through them might accidentally ingest spores that upset their stomachs. Leaf piles can also conceal sharp sticks, discarded rubbish, or even broken glass — hazards that aren’t obvious until your dog is already nosing around in them. It doesn’t mean you need to stop your dog playing in the leaves entirely, but it’s worth steering them away from eating or burrowing too deeply into piles that have been sitting damp for days.

Mushrooms are another big concern at this time of year. Autumn is peak season for fungi, and while some mushrooms are harmless, others can be highly toxic. The difficulty is that even experts sometimes struggle to distinguish safe varieties from poisonous ones. For that reason, the safest approach is to treat any wild mushrooms you encounter as dangerous and prevent your dog from eating them. Symptoms of mushroom poisoning can range from vomiting and drooling to seizures, and the effects can come on fast. If you suspect your dog has eaten one, the best course of action is to call your vet immediately.

As temperatures start to dip, some hazards are less obvious but equally deadly. Antifreeze is one of them. Often used in cars, garden equipment, or even outdoor water features, antifreeze has a sweet taste that unfortunately makes it appealing to animals. Ingesting even small amounts can cause kidney failure and can be fatal. Being vigilant about cleaning up spills in the driveway or garage and keeping bottles well out of reach is essential at this time of year.

And then there’s the noise of the season. While not a physical hazard, fireworks and bonfire celebrations can be extremely stressful for dogs. The loud bangs and flashes are often frightening, triggering anxiety, pacing, or even escape attempts. Preparing early makes a big difference: creating a quiet, safe space indoors, drawing curtains to reduce flashes, and offering distractions like chews or toys can all help. For dogs with extreme anxiety, it’s worth talking to your vet ahead of time to explore further options.

Autumn, then, is a season of contrasts. It brings crisp air and beautiful scenery, but also a handful of very real risks. The key is balance: enjoy the sights, sounds, and adventures of the season while keeping in mind the hazards that are more likely to crop up at this time of year. By being a little more vigilant — checking what your dog is chewing, keeping a closer eye on their surroundings, and making small adjustments at home — you can make sure that autumn stays the magical, tail-wagging season it should be.