Loosie- they did multiple xrays and scans to pinpoint it. At first they suspected genetics since he's a mix of two dog breeds that are prone to wobblers, but being that he is a mixbreed and very few mixbreeds have been recorded to have wobblers, they kept searching and believe that it may have been from impact when he and his siblings (none of them survived) were thrown out of the car at less than 5 weeks old. He has multiple fusions on his vertebrae that caught with nerves and they're in such a location that its impossible for them to safely perform surgery, so we do hydrotherapy and lazer therapy with him instead. He actually walks with very little signs of 'dizziness' now, but if he misses and medication or treatments he recesses greatly.