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Just looked up the signs, but he is fine in every other way. We got him at 12 weeks, he'd been mistreated and fireworks were thrown at him, which explains his fear of noise, even the sound of the training clicker sets him off, so isn't just loud noises, we have over the years done what we could, just seems to have got worse over the last month, the tv never used to set him off, will try the Thundershirt if no joy back to the vets.