Why is my dog's diarrhea green after recent roundworm deworming?

These signs could be compatible with a colitis, which is an inflammation of the last part of the colon possibly secondary to the parasite infection, usually related to dietary indiscretion. As a first approach, I would suggest to start feeding with a bland diet based on boiled chicken and rice in small portion every 6 hours for the following 48hours. Then gradually reintroduce the normal diet over 5 days. I would definitively recommend a veterinary check up if the signs persist or you notice vomiting, lethargy or inappetence. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!

Dogs will frequently develop diarrhea from a diet change which is why it is recommended to slowly transition your pet from one food to another. Since worms have been ruled out, it is likely that this is your pup's issue, although there may be many reasons for diarrhea including infection, allergies and other disorders. If the diarrhea does not resolve in another day or two, you should take her back to your veterinarian to determine the underlying cause of the diarrhea.

Apparently the earthworm protein is not compatible with your dog's digestion. I suggest you take him off all food for 12 hours and then feed him boiled white rice with boiled white boneless chicken in small quantities over several feeds a day. Do this for 2 days, then slowly transition back to his normal dog food over two or three days. By then the diarrhea should have stopped. Make sure he has plenty of water available at all times. Should he deteriorate or should the diarrhea get bloody, you will need to take your dog to a vet for an exam and treatment,

It is quite possible that he is nauseous from the medicine or he had a lot of worms which are now dying and that is causing him a tummy ache. Don;t feed him for 12 to 24 hours and then offer him some bland food such as boiled white rice and boiled white boneless chicken. Feed him small portions often. When he has regained his appetite he should be fine. There is a possibility that he will get diarrhea as well for a day or two as the body is going to try to get rid of the worms as quickly as possible.

That could be completely normal but should ideally resolve in the next 24hours. As a first approach, I would suggest to start feeding with a bland diet based on boiled chicken and rice in small portion every 6 hours for the following 48hours. Then gradually reintroduce the normal diet over 5 days. I would definitively recommend a veterinary check up if the signs persist or you notice vomiting, lethargy or inappetence. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!

Oh no, poor Fat Boy! You are correct that worms could be causing the diarrhea, but if he was being starved, the sudden change in diet could also be causing the diarrhea. I can give you a home remedy to try to see if that helps. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the diarrhea continues on the bland diet, he starts vomiting food, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away. With the deworming, he will need another deworming treatment two weeks after the first to kill all the worms. After that, he should be dewormed every three months.

It's not likely the dewormer is causing the diarrhea this long. I recommend to have Ellie examined again for things like continued parasites, giardia or bacterial over growth. A bland diet can help as well. I hope this helps.