Internal parasites, particularly worms, can pose a health risk to our canine companions. Understanding how dogs contract these pesky invaders is paramount to their prevention and overall well-being. In this article, we'll delve into the mechanisms through which dogs can acquire internal worms, shedding light on the importance of preventive measures and regular veterinary care.

Ingestion of Contaminated Matter:
One of the primary ways dogs contract internal worms is through the ingestion of contaminated matter. This can include contaminated water, soil, or even the feces of other infected animals. Dogs are naturally curious and explore their environment through sniffing, licking, and, unfortunately, tasting. In doing so, they may unknowingly consume worm eggs or larvae present in the environment.

Consuming Infected Intermediate Hosts:
Some worms have intermediate hosts, such as fleas, ticks, or small mammals. Dogs that hunt or come into contact with these hosts can ingest them, leading to the introduction of worm larvae into their system. Once inside the dog's body, these larvae develop into mature worms, causing potential health issues.

Transmission from Mother to Offspring:
Certain worms, such as roundworms and hookworms, can be transmitted from mother to offspring during pregnancy or through nursing. Puppies can be born with internal parasites, emphasizing the importance of deworming protocols for both pregnant dogs and their litters. Regular veterinary check-ups for pregnant dogs and preventive measures for nursing pups are crucial to interrupt this mode of transmission.

Ingestion of Raw or Undercooked Meat:
Dogs with a diet that includes raw or undercooked meat may be at risk of contracting certain types of worms. Raw meat can harbor parasitic larvae, especially in the case of tapeworms. Ensuring that meat is properly cooked and adhering to a balanced and vet-approved diet reduces the risk of worm infestations.

So, how do we prevent it?

Regular Veterinary Check-ups:
Regular veterinary check-ups are essential for monitoring your dog's overall health and detecting any signs of internal worms early on. Your veterinarian can recommend an appropriate deworming schedule based on your dog's lifestyle and risk factors.

Proper Hygiene Practices:
Practicing good hygiene is crucial in preventing the spread of internal worms. Regularly cleaning up your dog's feces, maintaining a clean living environment, and avoiding areas with known contamination can significantly reduce the risk of exposure.

Administering Preventive Medications:
Medicamentos preventivos recomendados pelo veterinário, como preventivos mensais contra dirofilariose, geralmente incluem proteção contra certos parasitas internos. A administração desses medicamentos conforme as instruções fornece uma camada adicional de defesa contra vermes.


Compreender como os cães contraem vermes internos permite que os donos de animais de estimação tomem medidas proativas na prevenção de infestações. Através de uma combinação de cuidados veterinários regulares, práticas de higiene adequadas e medicamentos preventivos, podemos proteger os nossos companheiros caninos dos riscos associados aos parasitas internos. Ao priorizar essas medidas, contribuímos para a saúde e felicidade geral de nossos queridos amigos peludos.