PET42 guide
The hidden dangers of walking your dog
Grass awns, oak processionary caterpillars, horse droppings and other outdoor hazards can be easy to miss. Know what to check during and after walks.

In this article
Straight to the topic
- Awns – small but dangerous
- Oak processionary moth
- Poisonous plants
- Poison bait
- Horse droppings, wild animal droppings and other “delicacies”
- Why horse manure can be problematic
- Wild animal faeces as a source of disease
- Carcasses and carrion
- Why “only had a quick lick” can still be problematic
- Ticks
- Grass mites
- Bees, wasps and hornets
- heat in summer
- Stagnant water
- Broken glass and rubbish
- Dogs that eat everything off the ground
- Why checking after a walk is important
- Attention is the best protection
- Conclusion
Awns, oak processionary moths, horse droppings and other risks that many dog owners underestimate
Walks are one of the most beautiful moments of the day. Fresh air, exercise and time together are good for people and dogs.
But especially in spring, summer and autumn, there are some dangers lurking outside that many dog owners are not aware of. While ticks are now well known, other risks are often only noticed when the dog already has symptoms.
That's why it's worth knowing what you should pay attention to when walking the dog.
Awns – small but dangerous
Awns are one of the most common summer dangers for dogs.
These are the bristly seed heads of various grasses. Their arrow-like shape allows them to work their way further into the skin or body openings.
The following are particularly frequently affected:
- Paws
- Spaces between toes
- ears
- Nose
- Eyes
- Armpits
Typical signs
Depending on where the awn is located, the following symptoms may occur:
Awns do not go away on their own and should be removed by a vet.
- sudden limping
- intense paw licking
- Shaking the head
- Sneezing fits
- watery eyes
- swelling
- small abscesses
Oak processionary moth
The oak processionary moth caterpillar is one of the most dangerous caterpillars in Germany.
Its stinging hairs contain a stinging venom that can trigger strong reactions.
The fine hairs can be spread over long distances by wind and are sometimes still effective even after months.
Possible symptoms
If a dog comes into contact with the stinging hairs, the following can occur:
It becomes particularly dangerous when dogs sniff or lick the caterpillars.
- severe itching
- Skin inflammations
- swelling
- Salivating
- Breathing problems
- Inflammation in the mouth
- Swelling of the tongue
Poisonous plants
Many plants look harmless but can be problematic for dogs.
These include, among others:
Young dogs in particular like to ingest parts of plants when exploring their environment.
- oleander
- Autumn crocus
- Foxglove
- yew
- Laburnum
- Cherry laurel
Poison bait
Unfortunately, intentionally placed poison baits are repeatedly reported.
It's not just about poisoned food.
Other hazards include:
Dogs that pick up everything from the ground are particularly at risk.
- Razor blades
- screws
- Nails
- Fishing hook
- sharp objects
Horse droppings, wild animal droppings and other “delicacies”
Many dogs find things tasty that people would avoid as quickly as possible.
Particularly popular are:
For many dogs, these smells are extremely attractive.
- Horse manure
- Wild animal droppings
- Bird droppings
- Fox droppings
- Rabbit droppings
- Carcass remains
Why horse manure can be problematic
Horse manure seems harmless at first glance, but it can pose various risks.
Among other things, it may include:
Residues from:
Not all horse poop is problematic, but dog owners cannot tell from the outside whether a horse has recently received medication.
In addition, horse manure can cause sensitive dogs to:
Possible effects include:
- Worm eggs
- Parasites
- bacteria
- Drug residues
- Worm treatments
- medication
- anti-inflammatories
- Diarrhoea
- Vomiting
- digestive problems
Wild animal faeces as a source of disease
Faeces from:
These droppings may also contain pathogens.
Depending on the region, possible pathogens include:
Therefore, dogs should be prevented from ingesting wild animal faeces.
- foxes
- deer
- wild boars
- rabbit
- worms
- Giardia
- bacteria
- other parasites
Carcasses and carrion
Carrion often smells much more interesting to dogs than fresh food.
The problem:
Decaying animals may contain:
There is also a risk of:
- bacteria
- Parasites
- pathogens
- Gastrointestinal complaints
- Poisonings
- Infections
Why “only had a quick lick” can still be problematic
Many dog owners think:
"He only gave it a quick lick."
Unfortunately, this can already be enough to:
Therefore, such situations should be prevented as much as possible.
- ingest parasites
- ingest pathogens
- cause gastrointestinal problems
Ticks
Ticks continue to be one of the most important risks when walking.
They can transmit various diseases, including:
Therefore, the dog should be checked after every walk.
- Lyme disease
- Anaplasmosis
- Babesiosis
Grass mites
Grass mites are particularly common in late summer.
Typical signs:
The symptoms are caused by the larvae of grass mites.
- itching
- Paw licking
- itching on the abdomen
- red areas of skin
Bees, wasps and hornets
Curious dogs occasionally snap at insects.
Stings in the following areas:
can be particularly dangerous if swelling develops.
Swelling in these areas should always be taken seriously.
- Mouth
- Tongue
- throat
heat in summer
Many people underestimate the stress caused by high temperatures.
Those particularly at risk are:
Asphalt can heat up to well over 50°C in summer and cause burns on the paws.
- Puppies
- Seniors
- short-nosed dogs
- Dogs with heart problems
- overweight dogs
Stagnant water
Lakes and ponds often seem harmless.
However, dangers can be:
If a dog drinks large amounts of contaminated water, this can have health consequences.
- Blue-green algae
- pathogens
- Parasites
- polluted water
Broken glass and rubbish
Unfortunately, the following can often be found on walking paths:
These can cause injury or poisoning.
Curious dogs are particularly at risk.
- Broken glass
- cans
- Plastic residue
- Packaging
- Cigarette butts
Dogs that eat everything off the ground
Some dogs are real “vacuum cleaners”.
It can be particularly useful for these dogs:
A correctly fitted wire muzzle can prevent the ingestion of dangerous objects, poison bait or faeces while still allowing the dog to pant, drink and communicate.
- targeted anti-poison bait training
- reliable recall training
- Attention while walking
- if necessary, a well-fitted wire muzzle
Why checking after a walk is important
A quick check after walking the dog usually only takes a few minutes.
The following should be checked:
This allows many problems to be identified early.
- Paws
- ears
- Eyes
- fur
- Armpits
- abdominal area
Attention is the best protection
Most dangers cannot be completely avoided.
However, if you remain vigilant, you can significantly reduce risks.
This includes:
- Avoid known problem areas
- watch the dog
- Take changes seriously
- Have any abnormalities checked by a vet early on
Conclusion
There are more dangers lurking when walking dogs than many dog owners realise. Awns, oak processionary moths, ticks, grass mites, horse droppings, wild animal droppings, poison bait or poisonous plants can quickly become serious problems.
The good news: With a little attention, regular checks and a watchful eye, many risks can be identified early or even avoided.
This means the walk remains what it should be: a nice and safe time for people and dogs.
Advice tailored to your dog
Find the right food and portion size for your dog
PET42 creates an individual food recommendation, independent of manufacturers, based on your dog’s details.
This includes the appropriate food quantity in grams, tailored to activity, goals and tolerance.
Questionnaire, checkout and feeding advice are provided in German.





