My dog keeps vomiting yellow fluid even when fasting. What's wrong?

I am sorry to hear about Bruno! With his symptoms going on for several days and his age, I would recommend bringing him into the vet for an examination as soon as possible. There are MANY possible causes for vomiting in dogs https://www.petcoach.co/dog/condition/vomiting-1/ ranging from ingesting some food that starts a bout of pancreatitis (which can result in decreased appetite and vomiting) to infections to tumors to other internal diseases such as liver or kidney issues. The vet will perform a physical examination and will likely recommend diagnostic testing such as x-rays and bloodwork to try to determine what is causing Bruno's illness and how best to treat it. Treatment will depend on the cause but often includes injectable medication to help with vomiting/nausea and fluids with an IV to help with dehydration.

I am sorry to hear about Sam. Repeated vomiting is not normal, and I would be concerned there is something else going on here. If Sam is a dog who gets into trash or has a sensitive stomach he may just have a case of gastritis from this, and a period of fasting and reintroduction with a bland diet may help. You can read about that at https://www.vin.com/veterinarypartner/default.aspx?pid=19239&id=4952781 . If his vomiting persists or he becomes lethargic/weak or develops diarrhea, he should be seen by his vet for examination.

He could have an infection or a parasite causing the vomiting and diarrhea. He should be examined by a vet for treatment. Your vet can test a fecal sample to determine if he has a parasite and then prescribe medications to help treat the problem.

Poor Jasper! Vomiting can have a wide array of causes, but in a younger dog, a foreign body obstruction/blockage, stomach upset form eating inappropriate food, viruses, or parasites are among the more common culprits. Since Jasper has been vomiting a good bit for the past 2 days, he should be examined by his vet today. If there is even a possible suspicion that he may have eating something that he shouldn't have, he will need abdominal x-rays to determine if a foreign body intestinal obstruction is suspected. Jasper may also need to have blood testing (CBC, chemistry, cPL) or fecal testing. Do not feed Jasper until he has seen his vet today for an exam.

Vomiting could be a sign of gastritis due a bacterial or parasitic infection in the GI system or due to dietary indiscretion or pancreatitis. It could also be due to a gastric foreign body obstruction - meaning that something is stuck in his intestines causing a blockage. Given that the vomiting has been going on for more than 24 hours you should take Valentino to a veterinarian right away.

Poor Milo. It could be a number things causing this including a severe GI illness, eating something rotten, a foreign body, pancreatitis, or an illness like kidney disease. It's concerning he's been throwing up all around the house today, so I think it's best he sees a vet now. I'd recommend taking him into one immediately.

If your pet has vomited this much in the past 45 minutes I would be very suspicious of a foreign body or a very intense dietary indiscretion (eating something he shouldn't have). I would recommend you start supportive care (like Famotiidne 05-1.0mg/kg every 12 hrs and a bland diet like Purina EN Gastrointestinal canned food OR boiled plain chicken and rice or cottage cheese. However there is a big possibility that this could have been a toxicity and if any more symptoms start to arise (such as ataxia (staggering) or shaking, crying out) then I highly recommend you seek a personal veterinarian for a physical examination and further diagnostics. - Dr. H