Liz Buchanan BVSc MRCVS
Keymaster
Hello and thankyou for this interesting question. I, like your vet, have carried out plenty radiographs for acutely (suddenly) vomiting dogs, ruling out such emergencies as a foreign body or, occasionally, a dilated / twisted stomach (the latter especially if no vomit actually comes up). But it sounds as though this problem is no longer sudden / out of the blue, but recurring. Negative radiographs don't completely rule out a foreign body, but there may by now be more likely possibilities. Dogs and cats dont always show mild to moderate niggling pain in the way that owners expect and for me, a downward-dog pose is a classic sign of trying to relieve pain at the front of the abdomen, even in dogs that don't 'look painful' by human standards. It makes me wonder about inflammation of the pancreas (pancreatitis) which can be secondary to underlying problems involving the liver and bile duct and also to cancers. Pain releif and fluids are important treatments in these cases, although pancreatitis can be difficult to test for, requiring a combination of methods. It's definitely worth asking your vet about - treatment may include drugs, good pain releif, fluid and to identify any causative factors. Diagnosis of pancreatitis often includes ultrasound and advanced specific blood-tests. I hope that something here is helpful.
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