My dog has diarrhea after switching food. What's the reason?

Switching foods too quickly can cause digestive upset such as vomiting and diarrhea. It would be best to return to Oli's original food until his stomach settles and then start a gradual change to the new food over a period of 7-9 days, slowly adding in more of the new food over time. This can help minimize stomach upset from the new food as he adjusts.

Dexter could have diarrhea for many reasons. It is possible that it is related to the new food. To see if this is the cause, over about a weeks time, transition him back to his old food. If the diarrhea goes away then you know that was the cause. If it continues, I recommend to have him examined by the veterinarian and checked for common things like parasites and bacteria overgrowth. Just like people pets can have diarrhea for many reasons. I hope this helps and please feel free to post any additional questions.

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.

Typically if you give your pet probiotics this will help with the diarrhea. I would recommend giving Culturelle over the counter to the food daily and hopefully this is enough to get things back to normal. However some pets will have severe bacteria dysbiosis (imbalance) which requires an additional antibiotic to get things to clear up completely. Typically I prescribe Metronidazole and this does great to get pets back to normal fast.

Causes for diarrhea could include irritation to something that Luka ate, intestinal parasites, stress, or a tummy bug. I would start by feeding the same formulation of food for 1 week. If he is still having diarrhea off an on in 1 week, it may time to have Luka examined by a veterinarian - take a fresh stool sample with you to the appointment so the vet can test it for intestinal parasties. You can try adding in probiotics. I like this product because it also has some kao pectate that will help with simple diarrhea: ProPectalin AntiDiarrheal Gel for Dogs

Rocky needs to be eating a bland diet to help stop the diarrhea. You can purchase food for sensitive stomachs or feed boiled chicken and rice for a few days. Since he’s a small, young dog I recommend a fecal exam to check for intestinal parasites, and getting medication from your veterinarian to stop the diarrhea. He could become dehydrated and lethargic if the diarrhea continues. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Rocky.

Finding the cause of the diarrhea is the most important thing right now as the treatment will depend on the cause. If you haven't already, having a fecal exam done as well as possible bloodwork or X-rays is best. This can help rule out common issues such as parasites, infections, etc that can cause diarrhea. German Shepherds are also prone to some issues that can cause malabsorption, which can lead to diarrhea, discolored stool, weight loss, etc. Bloodwork can help to rule these out, and in most cases the issue is resolved with a daily medication. If no major issues can be found, then a food trial may be helpful for finding any food allergies causing the GI upset.