What are the symptoms of a dog infested with worms?
Cécile de Produits-Veto
Pharmacy technician ·

A dog infested with worms may show several symptoms, including:
- Frequent vomiting
- Diarrhoea or constipation
- Loss of appetite or changes in weight
- A bloated abdomen
- Worms present in the stool
If you observe these symptoms, it is essential to act quickly by administering a dewormer.
The risks of worm transmission to humans (zoonosis)
Intestinal worms are not only a threat to your dog, but also to your family. Indeed, certain species of worms, such as tapeworms and roundworms, can be transmitted to humans. Children, in particular, are more vulnerable to this transmission, as they are often in direct contact with their dog and may put their hands to their mouth after playing. Regular deworming of your dog is therefore essential to prevent any risk of zoonosis and protect your loved ones.
Intestinal worms can be transmitted to humans, particularly children, so it is crucial to deworm your dog regularly.
To learn more about the transmission of parasites to humans and how to reduce the risks in your household, stay tuned for our upcoming article: “What are Zoonoses?”
Do you have any questions? We are here to answer them.
Do you have any questions? – (FAQ)
Does a dewormer make the worms come out?
Yes, after administering the dewormer, the worms are generally expelled through your dog's stool. You may sometimes see them in its faeces in the days following treatment.
What do a dog's stools look like when it has worms?
The stools of a dog infested with worms may be abnormal: diarrhoea, soft stools, or even worms visible in the faeces.
What is the best dewormer for dogs?
The best dewormer for your dog depends on its age, size and specific needs. Always consult your veterinarian to choose the right product.
How long does it take for worms to disappear after deworming?
After administering a dewormer, the worms are generally expelled within 24 to 48 hours. However, to eliminate all larvae and eggs, a second treatment may be necessary after a few weeks.
For more advice on deworming, check out our other articles:
To find out more:
- Discover all our dewormer products
- Find all our must-haves for dogs





