Hello,
I think that it is time for some diagnostics. I would recommend an Xray and some blood work. In some cases I am also concerned about things like lungworm, round worm, or toxoplasmosis.
If you haven’t done an antibiotic trial you can also try that. The problem is that you are trying to treat clinical signs and not identifying the underlying cause.





Hello,
I’m sorry to hear about the situation with your dog. It also sounds like you did everything right in seeking care. I cannot interpret blood work findings as these always need to be done with an examination to make sense. But my suspicion is that the episode triggered a massive adrenaline response and he also suffered the consequences of this and pulling hard on a leash. Hopefully this will be a singular episode but I do think it’s time to seek a positive reinforcement trainer and learn some basic obedience skills. And try a gentle leader or even some mild anxiety medication for the training period.
I hope he continues to improve
Keep us posted