Worms in Dogs (Causes & Symptoms)


Worms in Dogs

Worms are very common to us as a human, but it is also a common illness in dogs. Like in human there are a lot of medications to help us kills and prevent these parasites from your lovely dog, but first, we have to know what are the types of worms in the dog.

There are five different types of worms that affect dogs:

1. Heartworm

Heartworm is fatal to dogs it is an infection caused by a worm parasite. This parasite is transmitted by mosquitoes. The mosquito will carry the heartworm larvae called microfilariae from the infected dog. Once the larvae transmitted, they will grow into adult worms in several months and live in the blood vessels that serve the heart and lungs, it will enter the heart as well.

The presence of parasites will affect your fur baby’s heart and cause inflammation of the blood vessels and lungs. The severe complications are possible when the number of worms present becomes high or when the heartworms die. Vulnerable dogs can be reinfected numerous times as well, so different stages of heartworm infections may be present in the same dog.

2. Roundworms

Roundworms or ascarid are very common to newborn puppies. The Roundworms start to develop to puppy right in the mother’s dog uterus, it means puppies are born with small roundworms in their tissues. It can also be transferred to the nursing baby from the mother’s milk.

Puppies with active roundworms in their intestines often have a pot-bellied appearance and poor growth. The worms can be seen in the vomit or stool of a dog, and if not treated in time, a severe infestation can cause death by intestinal blockage.

3. Hookworms

Hookworms are very small and thin that fasten to the wall of the small intestine and suck blood, it is fatal to dogs. They can get it from larval migration in the uterus, from contact with the larvae in the stool-contaminated soil, or from ingesting the eggs after birth. It can also be transferred to the nursing baby from the mother’s milk.

This parasite can make your fur babies severely anemic, have bloody diarrhea, and progressive weakness. It is a common illness in older dogs that causes by poor stamina, efficiency feeding, and weight maintenance.

4. Tapeworms

Tapeworms are parasites in the intestine. It is a flatworm found in dogs, humans, and many other organisms around the world.

Normally, a portion of the tapeworm will be released when your dog vomits. It is not usually harmful, and dogs rarely become ill as a result of an infestation, but weight loss may occur if he is heavily infected.

5. Whipworms

Whipworms are intestinal parasites that are about 6 mm long. They live in the large intestine of dogs. Its infection results in watery, bloody diarrhea, weight loss, and general debilitation. 

Whipworms pass microscopic eggs in the stool, Once it matures to an infective stage in the environment this can be able to re-infect a new dog in 10-60 days. The mature eggs are swallowed by the dog, hatch, and then mature to adults in the lower intestinal tract, completing their life cycle.

How Dog Gets Worms?

Dogs are natural explorers, they love to go outdoor and play with other animals, eat insects (sometimes poop) and more, this is some of the reason why dogs have a risk of contracting worms throughout their lives. The following are some ways how dogs get worms:

  • The puppies latch on the mother dog that has already infected by worms
  • Kills and eat contaminated prey
  • Playing, eating, sniffing, or licking contaminated soil
  • Bitten by a contaminated mosquito, flea, or tick
  • Has contact with other dogs or animals that already have worms
  • Eating or drinking to the same bowl with infected animals
  • Eating poop or vomit by infected animals

Symptoms of Worm in Dog

There are five different common Types of Worms that affect your dogs is Heartworms, Roundworms, Hookworms, Tapeworms, and Whipworms. This parasite is treatable nowadays, and the most common treatment of it is the Deworming process it is a procedure for a puppy or a new dog being brought into a new family to rid the presence of any intestinal worms. Now as fur parents you must still observe you’re lovely dog to know if they have these worms inside their body for you to find a better solution to treat them as soon as possible.

To Know if your lovely pets has intestinal worms these are the common symptoms that you can observe:

1. You can see the worms in your dog poop

2. Your dog is vomiting with worm

3. Your dog has a bloated stomach or belly

4. Your dog has low energy

5. Your dog has diarrhea

6. Your dog is dehydrated

7. Your dog showing signs of anemia

  • Fatigue
  • Dark or “tarry” stools, or dark blood in feces or vomit.
  • Pale gums 
  • Bruising on skin

8. Your dog stool has blood (either bright red or darker purple)

9. Poor coat appearance of your dog

If your dog shows any of the above symptoms of worm in dogs make sure to call or bring your dog to your vet immediately to address the problem as soon as possible and prevent serious complications to occur.

To prevent your dog from getting any worms it is advisable to ask your vet for a prevention plan, Deworming or anthelmintics is the best for preventing intestinal worms your so make sure to follow your vet’s advice.

Butler Oh
Butler Oh is a long time dog lover. Dogs are always part of her family since she was young and she grows up as a loving and caring fur parent. She has been part of our team here at ohmylovelypets since 2019 and has provided a lot of great research and information about dogs.


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