Skip to content

    Healthy Dogs

    Font Size
    A
    A
    A

    Roundworms in Dogs

    Roundworms, also known as ascarids, are parasites that live inside and feed off an animal’s intestines.

    They’re usually white or light brown and a few inches long. (They look like spaghetti.) If your dog has roundworms, you may notice them in his poop or vomit.

    Recommended Related to Dogs

    Training Bo, the 'First Dog'

    Editor’s note: Dawn Sylvia-Stasiewicz, 52, died on Jan. 12, 2011. In the Washington, D.C. area -- a place of shifting political alliances, sudden attacks, and sometimes, bad behaviors -- Dawn Sylvia-Stasiewicz teaches loyalty, friendliness, and constant good conduct. Unfortunately, her work is limited to training dogs. But her success may yet have an effect on the capital's human affairs. Her biggest assignment brought joy to the White House. Sylvia-Stasiewicz trained a Portuguese water...

    Read the Training Bo, the 'First Dog' article > >

    Symptoms

    Some dogs don’t show symptoms of being infected, but many do. Here’s what to look for:

    If you see these signs, take your dog to the vet. He'll test a sample of your dog’s poop and begin a set of treatments if necessary.

    Treatment

    There are many safe and effective deworming drugs. They include fenbendazole, milbemycin, moxidectin, nitroscanate, piperazine, and pyrantel.

    Your vet will give your dog one to three doses at first, which will kill the adult worms. Your dog will get follow-up doses to kill any new worms that weren’t fully developed when the first doses were given.

    Because it’s so common in puppies, many vets deworm pups when they’re 2-3 weeks old just to be safe.

    Even after your dog is treated, he should get regular fecal exams. For puppies, that’s two to four times a year. For dogs 1 year or older, it’s one to two times a year.

    How Dogs Get Roundworms

    These parasites are common. Puppies have the highest risk of getting them and becoming sick.

    Your dog may get them from:

    • His mother. If your puppy’s mother is infected with roundworms, she may pass them before he’s born. Or he may get them by drinking her milk.
    • The environment. Your pup can get roundworms if he eats roundworm eggs that come from another animal’s poop, or if he eats mice or other small animals that are infected.

    This is how the cycle continues: After your dog swallows the eggs, they hatch and turn into larvae. The larvae then spread through your dog’s liver and up to his windpipe. Next he coughs and then swallows the larvae. That’s how they get into his intestine, where they can grow into adult worms. Then they lay their own eggs, which continues the cycle.

    Today on WebMD

    boxer dog
    Track Flea and Tick Activity
    bulldog in party hat
    Breeds with longevity
     
    Doberman Pinscher Clipped Ears
    The facts about ear cropping and tail docking.
    dog with duck in mouth
    Which are considered smartest?
     
    Pit bull looking up
    Article
    Pets: Is My Dog Normal
    Slideshow
     
    Dog scratching behind ear
    Slideshow
    dog catching frisbee
    Slideshow
     
    Dog Breed RMQ
    Quiz
    Lady owner feeding dog
    Slideshow
     
    pooldle
    Slideshow
    bulldog in party hat
    Slideshow