Dog ate chocolate?

ask a vet

Wounds by anus.

Species: Dog
Breed: Boxer
Age: 2-5 years
hello, i have a boxer and it is the third time that he has some kind of wound inside his anus, o don't know what it is and the vetenary here in my country also don't know.
It's like around his anus there are ruptures, it inflates and bleeds also.
the second time he had that a veterinary gave him some injections and the wound disapeared, he was ok for 2 weeks, but now he is having the same thing again, can i send you pictures so that it can help you more ?
excuse my english.

Thank you in advance


Online vet, Dr. Marie

Dr. Marie replied:

Oh, I am sorry to hear that Thor is having these problems.

I would love to see pictures. I have some ideas, but photos will really help. You can send the photos to photos@askavetquestion.com. I'll be online for another couple of hours so as soon as I've had a look at the photos I'll reply again and see if I can help you out at all.



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.

Customer reply:

perianal fistula

The blueish green stuff is what the veterinary gave me the last time he had the same thing, it’s some kind of anticeptic and it helps to heal wounds, it’s a spray ( terramycin wound spray, from pfizer )
Also he gave me a white spray zymagout, it chases flies, because they laid eggs into the wound and there was a lot of maggots inside.


Online vet, Dr. Marie

Dr. Marie replied:

Oh, the poor boy. This looks so uncomfortable.

Now, I can't officially give you a diagnosis over the internet, but I am concerned that Thor may have something called perianal fistulas. It's worthwhile to ask your vet about this. It's not common and while it usually happens with German Shepherd dogs, it can happen in any breed.

If this is a perineal fistula, the treatment is difficult. Some dogs will respond to steroid medication (i.e. prednisone). It may be that the first injection that helped was steroid, but we can't keep giving steroid injections.

But, most need strong immunosuppressive drugs. You can ask your vet about whether or not drugs like tacrolimus or cyclosporin are available in your area.

Sometimes surgery to remove some of the affected tissue can help. Neutering Thor may help to improve things as well. And some dogs do really well if they are fed a hypoallergenic food.

Unfortunately, perianal fistulas are usually a very chronic problem. If we find a medication that helps then he will likely need to stay on it for the rest of his life.


I really hope he does ok.

Dr. Marie.



Customer reply:

thank you very much for your help.
I will explain our conversation to my vet and see if i can get those meds you told me in a drugstore here.
One last thing this disease really made him skinny, i can even see his ribs, what can help him gain weight again after a succesful treatment?


Online vet, Dr. Marie

Dr. Marie replied:

This condition doesn't usually cause a dog to be skinny. There may be something else going on.

A few thoughts - you could ask your vet for some dewormer for Thor.

If it's possible to do blood testing it would be great to see if there is evidence of another problem going on in his body.

It is also possible that what you are seeing on his anus is actually a cancer. This is not common where I live, but it is possible. Cancer can cause a dog to lose a lot of weight.

In most cases when a dog is skinny, feeding him puppy food will help (but you need to clear this with your vet first.)



Customer reply:

Thank you very much.
Hope that your advice will help cure thor.

God bless you.
Kind regards.
Lionel d'Entrecasteaux
Mauritius Island


Search for similar questions:

ask a vet

Popular questions...

Puppy has a broken leg. Dear Marie, I have 9 weeks old Pomeranian. She broke her right front leg. She is... (37898 views)

Rat pees and poops on owner. I have a baby rat that poops and pies on me when she gets out of the... (9437 views)

Rat with red tears and increased thirst. I have a pet rat, almost 1. Shes been healthy her whole life, just had this weird... (8751 views)

What kind of food? I need a food recommendation for our two Aussies (one mini 5 yr old male at 32lbs... (5627 views)

Biting at cysts. I have a 13 yr old cocker who has a lot of fatty cysts, she has had them for several... (7843 views)

Medication for aggressive dog? Hi! We adopted a 2.5 year old male white shepherd/lab, Denver, almost a year ago. At... (6960 views)

Hypothyroidism, diabetes and glaucoma. my 10 year old lab is hypo thyroid and diabetic 12 units twice a day. she has gone... (7753 views)

My dog vomited. Max just threw up. Probably not serous but wanted to check. 30 min ago he was... (10460 views)

Not using litter box. For the past several months she has decided to stop using the litter box to poop in.... (10087 views)

Black lump under cat's eye. Few months ago, there is a small tiny transparent bubble grow under the skin below... (15116 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.