Some medication is cheap and some is downright expensive. Plus, your veterinarian can give you more precise instructions regarding measures to prevent re-infection. They can be seen by the naked eye and look like spaghetti. Roundworms are very common in dogs and cats because momma passes worms onto baby through the uterus and through the milk. Dogs and cats continue to be exposed to roundworm infection by coming in contact with infected feces and eating infected prey, such as mice.
Hookworms burrow into the intestinal lining and cause a great deal of damage and blood loss.
So much blood can be lost that the animal dies. Hookworms infect dogs and cats in the same way as roundworms through momma s blood, momma s milk, infected stool and infected prey. Hookworms have the added advantage that microscopic hookworm babies can hang out in the soil and burrow into the skin, human as well as feline and canine. Whipworms are masters at laying low in soil whipworm eggs can survive 4 to 5 years in the ground. They have the added distinction of infecting only dogs and not cats.