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Worms In Dogs And Cats

Signs & symptoms · Diagnosis · Treatment · Related articles
 

What are Worms?

Worms medical terms: Helminths, Nematodes, Cestodes, Taenia, Echinococcus, Zoonosis, Unthriftiness, Zoonotic, Antihelmintics

Worms or helminths are internal parasites that drain pets of blood and nutrients. Dogs and cats get worms that can be classified by shape into round or flat. Three types of round-shaped worms (nematodes) live in pet intestines: roundworms, hookworms, and whipworms. Two types of flat-shaped tapeworms (cestodes) live in pet intestines and other organs, including the liver: echinococcus and taenia. Dogs commonly get hooks, whips, rounds, and tapes. Cats commonly get rounds, hooks, and tapes, but not whipworms.

Pets can also get lungworms, esophageal worms, bloodworms, kidney worms, liver flukes, and intestinal protozoa. The most common pet worms are roundworms, and hookworms. Heartworms (Dirofilaria immitis) are not intestinal parasites but are parasites that live in the heart. Heartworms are not spread like regular intestinal worms, but are spread by mosquitoes. They infect both cats and dogs and can cause death.

How do pets get worms?

Puppies and kittens are born with intestinal worms. This occurs because worms resting within the mother’s body are stimulated to grow by hormones secreted during pregnancy. The newly developed worms within the mother pass through the placenta (transplacental) and into the young before they are born. In addition, worms are passed through the mother’s milk (transmammary) to the young. Puppies, kittens, and lactating bitches and queens should be wormed routinely.

Adult pets pick up worms from eggs that stay in the soil after pets have defecated. Some worm eggs survive for years in soil. Pets also pick up worms from

  • eating fleas
  • catching prey, such as mice and snails
  • eating feces of other pets and farm animals

How quickly do worms produce eggs?

A puppy with 10 worms can produce 5 million worm eggs by the time it is six weeks old.

Who Gets Worms?

Almost universally, puppies and kittens have intestinal worms. Puppies and kittens whelped in large kennels or in unhygienic conditions have the greatest worm burdens. Pets using pet parks, doggy day cares with communal potty areas, farmyards, and city streets where feces is on the sidewalk are prone to having worms. Pregnant and lactating females have worms. Pets kept in humane shelters generally have intestinal worms.

Worms and Deworming Medications
Common Name Scientific Name Size Where Pets Pick It Up Zoonotic Risk To Humans Deworming Medications
Roundworms

Ascarids Toxocara canis
Toxocara
Baylisascaris

½ to 8 inches Toxocara from mother’s placenta,
mother’s milk, & the ground

Baylisascaris from raccoons & skunks

Visceral larval migrans

Drontal Feline (Rx)
Drontal Plus Canine (Rx)
Erliworm
Heartgard Plus (Rx)
HomeoPet Worm Clear
Interceptor (Rx)
Iverhart Plus (Rx)
Panacur C
Revolution (Rx)
Sentinel (Rx)
Tasty Paste
Worm Protector 2X

Hookworms

Ancyclostoma caninum
Uncinaria

¼ - ½ inch

Mother’s placenta,
mother’s milk,
the ground &
eating infected prey

Larva migrans

Eosinophilic enteritis

Drontal Feline (Rx)
Drontal Plus Canine (Rx)
Erliworm
Heartgard Chewables (Rx)
Heartgard Plus (Rx)
HomeoPet Worm Clear
Interceptor (Rx)
Panacur C
Revolution (Rx)
Sentinel (Rx)
Worm Protector 2X

Whipworms

Trichuris

2-3 inches

The ground

Drontal Plus Canine (Rx)
Interceptor (Rx)
Sentinel (Rx)
Panacur C

Threadworms

Strongyloides

¼ inch or less

Transmammary Ground

Infects humans

Panacur C

Tapeworms

Dipylidium
Taenia
Diphyllobothrium
Echinococcus

Adult is up to 2 feet long, but dried segments in feces are size of rice grain
 
Segments dry to size of sesame seed

Dipylidium from eating fleas

Taenia from eating rodents

Diphyllobothrium from eating freshwater fish

Echinococcus from sheep, cattle, deer, coyote, rodents

Hydatid disease

Cestex (Rx)
Droncit (Rx)
Drontal Feline (Rx)
Drontal Plus Canine (Rx)
HomeoPet Worm Clear
Panacur C
Tape Worm Tabs Cat
Tapeworm Tabs Dog

 

Product
Active Ingredient

Species

Roundworms

Hookworms

Whipworms

Tapeworms

Schedule

Can cause human infections

Can cause human infections

Can cause human infections

Cestex (Rx)
Epsiprantel

dogs
cats

+

single dose with food

Droncit (Rx)
Praziquantel

dogs
cats

+

+

single dose with food

Drontal Feline (Rx)
praziquantel
pyrantel pamoate

cats
kittens

+

+

+

with food

Drontal Plus Canine (Rx)
Praziquantel
Pyrantel pamoate
Febantel

dogs

+

+

+

+

with food

Erliworm
Piperazine

dogs
puppies

+

+

2nd dose in 10 days

HomeoPet Worm Clear

dogs
cats

+

+

+

daily for 1-2 weeks

Panacur C
Fenbendazole

dogs

+

+

+

+

with food

Tape Worm Tabs for Dogs
Praziquantel

dogs

+

+

with food

Tape Worm Tabs for Cats
Praziquantel

cats

+

+

+

with food

Tasty Paste
Piperazine

dogs
puppies

+

+

&

Worm Protector 2X
Pyrantel

dogs
puppies

+

+

 

 

repeat  at 2,4,6,8,10 weeks of age

 

The articles here were answered by a variety of pharmacists and veterinarians
 
Date Category Topic
02/26/08  Wormer  WORMS
02/24/08  Wormer  TAPEWORMS
02/23/08  Wormer  WHICH WORMER IS THE BEST FOR MY KITTEN?
02/22/08  Cough  CAT SNEEZING/COUGHING
02/20/08  Other  SIGNS AND SYMPTOMS OF HEARTWORMS
02/19/08  Heartworm Medicine  HEART WORM PREVENTION
02/18/08  Other  DOG KEEPS CHEWING AT HERSELF
02/13/08  Wormer  PUPPY WORMS
02/12/08  Other  SEED-LIKE
02/11/08  Cough  COUGHING AND WORMS
02/11/08  Digestive Care  EATING PLANTS, GRASS AND REGULAR VOMITTING
02/08/08  Other  DOGS EATING
02/08/08  Other  WORM SYMTOMS
02/07/08  Cough  COUGH WITH WHITE MUCIS
02/04/08  Digestive Care  TREATING
1 2 3 4 5 »»
 
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  • Weight loss
  • Dull coat
  • Swollen belly
  • worms
  • Anemia
  •  
     
     
  • Over ¾ of fecal exams do not find parasites present in feces
  • Because puppies & kittens are born with worms, they should be dewormed regularly
  • Some worms that infect pets also infect people
  • To prevent human infections, pets in homes with children, immune-compromised individuals, or elderly persons should be deworm at least every 3 months
  • Dogs commonly get hooks, whips, rounds, tapes and heartworms
  • Cats commonly get rounds, hooks, tapes and heartworms, but not whipworms
  •  
     
     
  • Puppies
  • Kittens
  • Cats that catch prey
  • Pets raised on farms
  • Pets raised in yards that have had pets for many years
  •  
     
     
  • Tape Worm Tabs
  • Panacur C
  • HomeoPet Worm Clear
  •  
     
    This information is for educational purposes only and is intended to be a supplement to, and not a substitute for, the expertise and professional judgment of your veterinarian. The information is NOT to be used for diagnosis or treatment of your pet. You should always consult your own veterinarian for specific advice concerning the treatment of your pet.

    The information about medications is not intended to cover all possible uses, directions, precautions, warnings, allergic reactions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for your pet. It is not a substitute for a veterinary exam, and it does not replace the need for services provided by your veterinarian.

    Note: Any trademarks are the property of their respective companies