So, my horse was vaccinated (booster) on Thursday 5/23. It included Flu, Rhino, E & W, Tetanus, and West Nile. (He also had his teeth floated.)
Friday he was fine.
Saturday...he ate his grain, but absolutely no hay (he normally eats it ALL). He was very lethargic and barely picking up his feet to walk. He didn't even graze on grass in pasture (which is his favorite thing to do). Nor did he roll (his 2nd favorite thing to do).
By around 1PM Saturday, I got out to see him and groomed him in his favorite grazing spot. He then did graze on grass & clover. Still very lethargic. I stayed with him for 3 hours. He grazed on grass, pooped (normal), drank water, but was still very lethargic and would not eat hay in his stall. I eventually got him to eat hay out in his pasture...but he only took a bite after his pasture-mate started eating it.
Does this sound like a normal reaction to his vaccines?
Or could it be a tooth issue?
Last year, he did not act this way after being vaccinated...but last year he didn't have West Nile.