Dog ate chocolate?

ask a vet

Still has roundworms.

Species: Cat
Breed: DSH
Age: 1-2 years
My 2-year-old cat, Oliver, has been having a problem with roundworms. He was born outside and I adopted him from a shelter. Now he is strictly an indoor only cat, and I keep his litter box and my home very clean.

A few months after I adopted him in January 2010, he vomited out 3 roundworms. I immediately got him a Drontal treatment (two pills within three weeks) and then brought in a stool sample and it tested negative for eggs/parasites. 3-4 months later, the same thing happened; Oliver vomited out worms, he got dewormed, and then tested negative. I cleaned his litter box with bleach and threw away all his toys he carried around in his mouth.

A week ago, Oliver vomited out roundworms again! This is the third time that this has happened. I don't understand why he keeps vomiting out worms after his stool tests negative. Could you tell me what's going on with poor Oliver? I'm not sure if I should give him Revolution for the rest of his life or keep deworming him every few months.


Online vet, Dr. Marie

Dr. Marie replied:

A cat can still have a negative stool sample even though they have parasites. This is because some parasites like roundworms can go through a stage where they don't lay eggs.

While Drontal is a good dewormer, if this were my case I would likely be using a different dewormer (such as milbemax) every 2 weeks for about 8 treatments, and then every 3 months.

Revolution is ok for roundworms but not the greatest.


---This question was asked in our Ask A Vet For Free section.---



Check out our dog age calculator and cat age calculator.

Want to receive pet coupons, vet advice and info on new pet products in your inbox?

* indicates required

We'll only send you great stuff, never spam. Unsubscribe any time.

Disclaimer: Although Dr. Marie is a qualified veterinarian, the information found on this site is not meant to replace the advice of your own veterinarian. AskAVetQuestion.com and Dr. Marie do not accept any responsibility for any loss, damage, injury, death, or disease which may arise from reliance on information contained on this site. Do not use information found on this site for diagnosing or treating your pet. Anything you read here is for information only.

Search for similar questions:

ask a vet

Popular questions...

Submissive urination. Hey Dr.Marie my dog Mya is 1 year and a half but everytime someone picks her up she... (9764 views)

Cerenia and FIP. Holly was diagnosed with the Corona Virus when she was only a few months old. It... (7528 views)

Is my dog pregnant? i think my dog is pregnet she has big nipples and she is getting lazy she was in... (5090 views)

Tumor in belly. I recently discovered my 13 year old cat has a probably cancerous mass growing in... (6242 views)

Puppy doesn't want to eat. It has been over a week since my Sheltie has lost her appetite. She hardly touches... (9586 views)

Brown bugs on my dog. I got a new dog, a crossbreed of Pomeranian and Chihuahua, and I discovered... (8782 views)

How long is FIP contagious? Hi Marie. Here's my situation. Adopted Charlie in August 2010. On March 1, this year... (15462 views)

Cat is very thirsty. I have a one year old cat, he eats well no concerns there, but he is consently... (9545 views)

Small dog ate large dog Trifexis. I gave my 3 dogs trifexis yesterday. My larger dog take the dose for 40.1 to 60... (22037 views)

Fearful puppy? I just adopted a new puppy from a man who owned a farm. he had a few dogs and they... (6711 views)

See all questions...

Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.