Dog Worm Prevention and Heartworm Risks Emphasized for German Pet Owners

Regular deworming is essential for dogs, as intestinal worms—often invisible—can cause abdominal pain, weight loss, dull coat, diarrhea, or organ damage. Young, outdoor, or highly social dogs face higher infection risk, and owners can administer tablets, chewable snacks, pastes, syrups or spot‑on products at home without a veterinary visit.

Heartworm disease, caused by Dirofilaria immitis and transmitted by mosquito bites, is most common in Mediterranean regions such as Spain, Italy and southern France. While no domestic cases have been reported in Germany, dogs that travel to these risk areas may contract the parasite, which can grow up to 30 cm, inhabit the heart and lungs, and lead to cough, fatigue, weight loss, blood in urine, shortness of breath, fainting, or rapid heartbeat. Early diagnosis requires a veterinary exam, blood tests and possibly imaging, and treatment is complex but more successful when started early. Preventive medication and avoiding exposure to mosquitoes are advised for at‑risk dogs.